Genus: Centrosaurus LAMBE, 1904
Etymology: Greek, knetron, “spur, sharp point," and Greek, sauros, “lizard”: “spur
(crest) lizard”.
= Centrasaurus RUSSELL, 1966 (sic)
= Centrosaurssus RYAN & RUSSELL,
2005 (sic)
= Eucenrosaurus NESOV, 1995 (sic)
= Eucentrosaurus CHURE & McINTOSH, 1989
Etymology: Greek, eu-, “good, true," and Centrosaurus: “True Centrosaurus”.
= Monoclonius subgenus Centrosaurus LULL, 1933
Species: ? recurvicornis (COPE, 1890 [not 1889]) emend LANGSTON, 1975 (nomen dubium)
= Centrosaurus recurvatus LANGSTON, 1975 (sic)
Etymology: Recurve horn.
= Monoclonius recurvicornis COPE, 1889 (nomen
dubium)
= Ceratops recurvicornis (COPE, 1889) HATCHER
vide STANTON & HATCHER, 1905
(nomen dubium)
= Eucentrosaurus ? recurvicornis (COPE,
1889) CHURE & McINTOSH, 1989 (nomen
dubium)
= Chasmosaurus recurvicornis (COPE, 1889)
OLSHEVSKY,
2000
(nomen dubium)
Holotype: AMNH 3999
Locality: On the north side of the Missouri River nearly opposite the mouth of Dog Creek, Montana.
Horizon: Near the base of the Judith River Formation.
Biostratigraphy:
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material: Portions of skull, including frontal and nasal horn cores.
Note: Similar to a new ceratopid with a down curved nose horn?
_____________________________________________________________________________________
Species: apertus LAMBE, 1904
Etymology: Latin, apertio, "an opening," (feminine); in reference
to the large ‘holes’ in the frill.
= Monoclonius apertus (LAMBE, 1904)
= Monoclonius subgenus Centrosaurus
apertus (LAMBE, 1904) LULL, 1933
= Eucentrosaurus apertus (LAMBE, 1904) CHURE & McINTOSH, 1989
= Monoclonius dawsoni LAMBE, 1902 (referred
specimen)
Holotype: CMN 1173 & CMN (NMC) 971
Locality: Dinosaur Provincial Park, a short distance below the mouth of Berry Creek, west side of Red Deer River, Steveville, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Parietal crest missing right side.
Referred specimen
CHIBA, RYAN, BRAMAN, EBERTH, SCOTT, BROWN, KOBAYASHI, & EVANS, 2015
Locality: McPheeters bonebed, south of Manyberries, Forty Mile County, Southern Alberta Province, Canada.
Horizon: Oldman Formation, middle Judith River Group.
Biostratigraphy:
Age: Judithian age, Midle Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
RTMP 2009.039.0146: Left squamosal.
RTMP 2012.037.0021: Left parietal P2 process.
RTMP 2012.037.0197: Right parietal P2 and P3.
RTMP 2009.039.0249: Fused nasals.
RTMP 2009.039.0281: Unmodifed adult postorbital horncores.
RTMP 2009.039.0365: Right nasal.
Bonebed: Numbers: not given.
CURRIE & RUSSELL, 2005
Locality: BB30, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
TANKE, 2007
RTMP 95.75.64: Complete subadult parietal.
RTMP 2006.25.1: Fragmentary skull.
Locality: BB41, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB41A, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB41AA, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB91, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB91A, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB91B, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB91C, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB162, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB166, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given: Frgmentary skulls and fragmentary skeletons.
Locality: BB168, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB180, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: BB188, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Frgmentary skulls and fragmentary skeletons.
Locality: Quarry 042, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
USNM 8897: Skull.
Locality: Quarry 148, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 80.54.1: Skull.
Locality: BB061, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Skulls and skeletons.
Locality: BB061A, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Skulls and skeletons.
Locality: BB062, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Skulls and skeletons.
Locality: BB128, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Skulls and skeletons.
Locality: BB206, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: Skulls and skeletons.
DANIS, 1986
Locality: Quarry 001, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
ROM 767 (formerly ROM 5419): Skull, thyrohyals, 17 vertebrae, ribs, scapulae, coracoids, sternal plates, humeri, left radius, ulna, and manus.
Locality: Quarry 022, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
ROM uncatalogued: Skull.
Locality: Quarry 033, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
ROM (now at Museo de la Plata, Argentina): 79-XI-23-2: Skull.
Locality: Quarry 078, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
BMNH R.4859: Skull.
Locality: Quarry 081, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
CMN (NMC) 12229: Skull and skeleton.
Locality: Quarry 102, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
CMN (NMC) 8798: Skull.
Locality: Quarry 136, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
UA 16248: Skull and skeleton.
UA 11735: Skull.
Note : Paleopathology, left squamosal has a possible healing puncture wound (TYSON, 1977).
Note: From Quarry 135 (TANKE & ROTHSCHILD, 2002).
Locality: Quarry 143, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP: 79.11: Skull and skeleton.
RTMP 79.11.81: Left postorbital of an adult.
RTMP 78.11.57: Left postorbital of a juvenile.
RTMP 82.17.79: Posterior parietal.
RTMP 82.18.131: Subadult left postorbital.
EBERTH, BRINKMAN & BARKAS, 2010
Locality: Centrosaur skull and Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-03: Bone bed.
Locality: Centrosaurus Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-04: Bone bed.
Locality: Centrosaurus nasal horncore Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-05: Nasal horn core.
Locality: Jason Lavigne’s Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-06: Bone bed.
Locality: Microsite Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-07: Bone bed.
Locality: Southeasternmost Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-08: Bone bed.
Locality: Westside 1 Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-10: Bone bed.
Locality: Westside 2 Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-11: Bone bed.
Locality: Southwesternmost Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-13: Bone bed.
Locality: Low-Density ceratopsian Bone Bed 1, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-16: Bone bed.
Locality: Southeast of Langston Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-17: Bone bed.
Locality: Ceratopsian tail Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-19: Bone bed.
Locality: Low-Density ceratopsian Bone Bed 2, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Material:
Field # H97-20: Bone bed.
Locality: Aquatic microsite, South Saskatchewan River, near Hilda, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-09: Bone bed.
Locality: Mesovertebrate site, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-12: Bone bed.
Locality: Langston’s Ceratopsian Bone Bed, South Saskatchewan River, near Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
Field # H97-02: Bone bed.
EKHTIARI, CHIBA, POPOVIC, CROWTHER, WOHL, WONG, TANKE, DUFAULT, GEEN, PARASU, CROWTHER & EVANS, 2020
Locality: Centrosaurus bonebed, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 1989.018.0108: Fibula with osteosarcoma.
RTMP 2014.050.0192: Fibula.
MALLON, HOLMES & RUFOLO, 2023
RTMP 2018.032.001: Partial pareitosqumosal frill.
FREDERICKSON, & TUMARKIN-Deratzian, 2014
Locality: Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 1992.082.0001: Skull.
Centrosaurus apertus (modified from FREDERICKSON, & TUMARKIN-Deratzian, 2014), RTMP 1992.082.0001
Locality: Hilda, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 1994.182.0001 (composite): Skull.
Centrosaurus apertus (modified from FREDERICKSON, & TUMARKIN-Deratzian, 2014, RTMP 1994.182.0001 (composite).
Locality: Quarry 136, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
UALVP 11735: Skull.
Centrosaurus apertus (modified from FREDERICKSON, & TUMARKIN-Deratzian, 2014),UALVP 11735 .
McINTOSH, 1981
Locality: Quarry 109, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
CM 11374: Skull.
Note: Obtained from the Geological Survey of Canada in 1925, and later transferred to Museo de La Plata, Argentina (MDLP 79/XI/23/2).
LULL, 1933
Locality: Dinosaur Provincial Park, 2 miles south of Steveville, on the west side of the Red Deer River, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
ROM: Skull.
Locality: Dinosaur Provincial Park, At the lower end of Dead Lodge Canyon, 15 miles east of Steveville, on the west side of the Red Deer River, Newell County, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
CMN (NMC) 348: Skull with lower jaws.
Locality: Quarry 083, Dinosaur Provincial Park, Denhart Ferry, about 15 miles below Steveville, on the west side of the Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
CMN (NMC) 347: Skull.
Locality: Dinosaur Provincial Park, 1 mile east of Denhart Ferry, Red Deer River, Newell County, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
NMC: Skull less nasals, maxillae and most of face.
Locality: Dinosaur Provincial Park, Section 9, Tp21, R11, Red Deer River, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
ROM 4519: Skull and part of skeleton.
ROM: Frill.
Locality: Quarry unknown, Dinosaur Provincial Park, “East Fork” of Sand Creek, about 12 miles below Steveville, Red Deer River, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
AMNH 5377: Skull and jaws.
PARKS, 1921Locality: Dinosaur Provincial Park, 1 mile south of the Red Deer River and 2 1/2 miles above Happy Jack Ferry, at an elevation of 116 feet (aneroid) above the water, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
ROM: Skull and dentary, 17 vertebrae, scapula, coracoid, humeri, left radius, left ulna, left manus, both sternal bones.
Note: Paleopathology, fractured and healed lateral parietal.
RYAN, 2003
Locality: BB 168, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park,Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 168.A1-6, A2-12, A3-8: Bone fragments.
RTMP 168.A1-30: Dentary.
RTMP 168.A4: Dentary fragment.
RTMP 168.B1-1: Dentary, cp.
RTMP 168.A1-1: Left femur.
RTMP 168. B2-11: Femur.
RTMP 168.A4-5: Fibula.
RTMP 168.A3-21, A1-32, B2-12: Frill fragments.
RTMP 168.A3-22: Right humerus.
RTMP 168.A3-6: Left humerus.
RTMP 168.A2-11, A3-25: Ischia fragment.
RTMP 168.A4-10: Left ischium shaft.
RTMP 168.B2-3: Ischium?
RTMP 168.A1-10, B2-8: Jugal fragments.
RTMP 168.A2-18: Left jugal.
RTMP 168.A4-1, A4-4, A3-15: Limb elements.
RTMP 168.B2-1: Limb shaft.
RTMP 168.A1-11: Metacarpal.
RTMP 168.A1-23, A2-15: Nasal fragments.
RTMP 168.A2-5, A2-17, A1-41, B2-2, A1-38: Parietals.
RTMP 168.A2-9, A4-8: Parietal bars.
RTMP 168.A1-17, A1-22, A2-22, A3-12, A4-11, A4-12, A4-11, A4-SUR, C2-1: Parietal fragments.
RTMP 168.A2-24: Postorbital fragments.
RTMP 168.A2-20: Predentary.
RTMP 168.A3-2, C3-1: Premaxilla fragments.
RTMP 168.A1-44: Quadrate.
RTMP 168.A3-5: Radius.
RTMP 168.A1-7, A2-6, A3-17, A4-2, B2-10: Ribs.
RTMP 168.A1-3, A1-12, A1-24, A1-28, A2-15, A2-29, B2-5, B3-4: Rib fragments.
RTMP 168.A1-4: Left scapula.
RTMP 168.B2-2: Right? Scapula.
RTMP 168.B2-7, A4-7, A2-23: Scapula fragments.
RTMP 168.A2-14, A3-10, A3-16, A4-6, A1-39, B2-18, B3-1, C3-2, A1-5: Skull fragments.
RTMP168.A2-1, A2-13, A3-1, A3-7, A2-8, A3-11, A3-23: Squamosals.
RTMP 168.A2-2, A2-4: Tibiae.
RTMP 168.A2-27: Tibia fragment.
RTMP 168.C2-3: Distal tibia?
RTMP 168.A1-15, A1-34: Teeth.
RTMP 168.A4-3: Ulna?
RTMP 168.B3-6, A3-14: Vertebrae.
RTMP 168.2B1-7: Angular.
RTMP 168.2B2-13: Femur.
RTMP 168.2A3-2: Humerus.
RTMP 168.2A1-1, 2A3-3: Ilia.
RTMP 168.2B1-11: Ischium.
RTMP 168.2B3-3: Jugal fragment.
RTMP 168.2B1-15: Limb element.
RTMP 168.2B1-27: Parietal.
RTMP 168.9005:Postorbital.
RTMP 168.2B1-13, 2B1-3, 2B2-1, 2B1-12, 2B2-3, 2B1-12, 1B1-25: Ribs.
RTMP 168.2B2-11: Scapula.
RTMP 168.2A3-4, 2B1-6: Skull fragments.
RTMP 168.2B2-8: Squamosal.
RTMP 168.2B1-26: Ungual.
= cf. Centrosaurus aperatus RTMP 168.A1-13, A3-25, A1-26, 2A2-11, 2A4-1, 2B1-18: Limb elements?
SAMPSON, RYAN & TANKE, 1997Locality: Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 82.18.79: Adult partial parietal.
RTMP 80.18.110: Sub adult partial parietal.
RTMP 81.18.149: Juvenile partial parietal.
RTMP 70.11.83: Sub-adult nasal horn.
RTMP 79.11.147: Juvenile postorbital.
RTMP 82.18.139: Sub-adult postorbital.
RTMP 79.11.81: Adult postorbital, prefrontal, palpebral and lachrymal.
HONE, TANKE & BROWN, 2018
RTMP 2014.012.0036: Fragment of a squamosal of a subadult.
Note: Bitemarks (feeding trace).
Locality: Quarry 181, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 82.16.11: Nearly complete parietal, squamosal and laterosphenoids, right splenial, fragmentary jugal, postorbital, palatine and pterygoid
Note: Once believed to be a juvenile Monoclonius.
Locality: Quarry 204, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 92.82.1: Skull.
Locality: Quarry 217, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 94.164.1: Skull.
Locality: Quarry 224, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 97.85.1: Skull and lower jaw.
Note: Pits, left and right postorbital horn cores, right squamosal epoccipitals, corner of left squamosal, some parietal process missing, TANKE & FARKE, 2006.
Locality: Quarry 231, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
ROM 1427: Skull.
Locality:U 214, Dinosaur Provincial Park, South side of the west branch of Little Sandhill Creek, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 2003.12.168: Skull.
TANKE & FARKE, 2003
RTMP 91.18.18: Partial right squamosal.
Note: Palaeopathology, ‘punched out leasion’.
TANKE, 2007
Locality: Pinhorn Ranch, Pinhorn Grazing Lease, Manyberries, Forty Mile County, Alberta Province, Canada.
Horizon: Oldman Formation, , middle Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
RTMP 93.70.1: Partial skull.
= Monoclonius dawsoni LAMBE, 1902
Etymology: In honor of Dr. George M. Dawson, C.M.G., late Director of the Geological Survey of Canada.
= Brachyceratops dawsoni (LAMBE, 1902) LAMBE, 1915Holotype: NMC 1173
Locality: Dinosaur Provincial Park, A short distance below the mouth of Berry Creek and Dead Lodge Canyon, west side of Red Deer River, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Fragmentary skull of a juvenile, a scapula and coracoid, a sacrum, and ilium, a rostral bone and a predentary bone.
Referred material:
HATCHER, MARSH & LULL, 1907
Locality:
Horizon:
Biostratigraphy:
Age:
Material:
NMC 506: Left scapula and coracoid.
NMC Predentary.
= Centrosaurus flexus BROWN, 1914
Etymology: Latin, flex, "bent, curved."
= Monoclonius flexus (BROWN, 1914) KUHN, 1936 via Monoclonius inflexus KUHN, 1936 (sic)
= Monoclonius subgenus Centrosaurus flexus (LAMBE, 1914) LULL, 1933
= Eucentrosaurus flexus (BROWN, 1914) CHURE & McINTOSH, 1989Holotype: AMNH 5239
Locality: Quarry 057, Dinosaur Provincial Park, 1 mile below Steveville, on the left bank of the Red Deer River, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Skull.
Referred material:
Locality: Quarry 249, Dinosaur Provincial Park, 2 miles from the mouth of Sand Creek, 12 miles south of Steveville, Red Deer River, Newell County, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
AMNH 5341 (YPM 2015): Skull and skeleton.
Note: Mounted in the Yale Peabody Museum.
Note: Pathology, has two fused cervicals, V and VI.
= Monoclonius nasicornus BROWN, 1917
Etymology: Latin, nasus, "nose" and Latin, cornice, "ornamental molding along a wall"; in reference to the ornamental nose horn.
= Centrosaurus nasicornus (BROWN, 1917) LULL, 1933
= Monoclonius subgenus Centrosaurus nasicornus (BROWN, 1917) LULL, 1933
= Eucentrosaurus nasicornus (BROWN, 1917) CHURE & McINTOSH, 1989Holotype: AMNH 5351
Locality: Quarry 105, Dinosaur Provincial Park, Along the banks of Sand Creek about 12 miles below Steveville, Dinosaur Provincial Park, Red Deer River, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Skull and skeleton.
New reconstruction of the skull.
Referred material:
AMNH 5443: Ulna.
LULL, 1933
Locality: Dinosaur Provincial Park, 1 1/2 miles south of the mouth of Little Sandhill Creek, Red Deer River, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
NMC: Skull with dentary and few bones of the skeleton.
Locality: Dinosaur Provincial Park, Dead Lodge Canyon, 8 miles below Steveville, Dinosaur Provincial Park, Red Deer River, Newell County, Alberta Province, Canada.Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material:
USNM 8897: Skull.
= Centrosaurus longirostris STERNBERG, 1940
Etymology: Latin, longirostris, "long snout."
= Monoclonius longirostris (STERNBRERG, 1940)
= Centrosaurus longirotris STERNBERG, 1940 (sic)
= Eucentrosaurus longirostris (STERNBRERG, 1940) CHURE & McINTOSH, 1989Holotype: CMN (NMC) 8795
Locality: Quarry 091, Dinosaur Provincial Park, 1 mile south of mouth of Sand Creek, quarry 91 on Steveville map (18m) 102 feet above the Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Skull and lower jaws.
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Species: cutleri (BROWN, 1917) L. S. RUSSELL,
1930
Etymology: In honor of William Edmund Cutler.
= Monoclonius cutleri BROWN, 1917
= Monoclonius subgenus Centrosaurus cutleri (BROWN, 1917) LULL, 1933
= Eucentrosaurus cutleri (BROWN, 1917) CHURE & McINTOSH, 1989
Holotype: AMNH 5427
Locality: Quarry unknown, Dinosaur Provincial Park, Near the mouth of Sand Creek, about 12 miles below Steveville, Dinosaur Provincial Park, Red Deer River, Newell County, Alberta Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.
Material: Posterior part of skeleton.
Note: Skin impressions.
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