Genus: Melvius BRYANT, 1987
Etymology: Melvius, after the first name of Mr. Melvin Thomas of Garfield County, Montana.
Species: thomasi BRYANT, 1987
Etymology: In honor of Mr. Melvin Thomas, Garfield County, Montana, in gratitude for his generous assistance to UCMP field crews.
Holotype: UCMP 129600
Locality: UCMP V83117, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material: Right maxilla and operculum, left angular, fragments of right cleithrum, anterior right and left dentary, left ?premaxilla, left angular, post-temporal, and infraorbital, tooth crowns, 4 trunk and 6 caudal vertebrae, neural spines, lepidotrichia, and associated fragments of dermal bone.
Hypodigm:
Locality: UCMP V70208, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129904: Right frontal fragment.
Locality: UCMP V73077, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 120026: Tooth crowns.
Locality: UCMP V73085, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129673: Trunk vertebra.
UCMP 120323: Tooth crowns.
Locality: UCMP V73087, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 123289: 150+ tooth drowns.
UCMP 130386: Dentary fragment.
Locality: UCMP V73090, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 123381: Trunk vertebra.
Locality: UCMP V73103, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 128813: Tooth crown.
Locality: UCMP V74116, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 128852: Tooth crowns.
Locality: UCMP V74117, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 128894: Tooth crowns.
Locality: UCMP V76138, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129677: 2 trunk vertebrae, 1 caudal vertebra.
UCMP 129675: Right maxilla fragments.
UCMP 129674: Tooth crown and operclum fragment.
UCMP 129676: Tooth crown.
Locality: UCMP V76162, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129912: Maxillary fragment and tooth crown.
Locality: UCMP V77121, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 130665: Vertebra.
Locality: UCMP V77119, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 130287: Tooth crown.
Locality: UCMP V78143, Garfield County, Montana.
Horizon: Upper Hell Creek Formation, Late Maastrichtian, Late Cretaceous.
Material:
UCMP 129905: Dermal bone fragments.
Locality: UCMP V80088, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129678: 2 tooth crowns.
Locality: UCMP V80097, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129679: Trunk vertebra.
Locality: UCMP V80092, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129906: Vertebra fragment.
UCMP 129907: Tooth crown.
UCMP 129908: Post-temporal fragment.
Locality: UCMP V80119, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 130288: Tooth crown.
Locality: UCMP V81159, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129680: 3 caudal vertebrae.
UCMP 129681: Fragments of operculum, post-temporals, ?parietal and other fragments of dermal bones, and fin rays.
UCMP 120287: Vertebra, post-temporal, and other fragments.
Locality: UCMP V81257, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129909: Dermal bone fragment.
UCMP 129910: Vertebra.
Locality: UCMP V81258, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129911: Vertebra.
Locality: UCMP V82210, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 130088: Tooth crown.
Locality: UCMP V82013, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129682: 7 tooth crowns.
Locality: UCMP V82060, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129683: Anterior left maxilla, 2 trunk vertebra and 1 fragment, lepidotrichia and dermal bone fragments.
UCMP 129912: Dermal bone fragments.
UCMP 129913: ?parietal fragment.
UCMP 120089: Maxillary fragment.
Locality: UCMP V83024, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129915: Vertebra.
Locality: UCMP V883604, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129916: Dermal bone fragment.
Locality: UCMP V82077, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129684: Trunk vertebra fragment.
UCMP 129917: Dermal bone fragments.
Locality: UCMP V83100, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129601: Nearly complete left cleithrum and infraorbital, fragments of ceratohyal.
Locality: UCMP V83104, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129602: Trunk vertebra.
Locality: UCMP V83130, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129877: Caudal vertebra.
Locality: UCMP V83254, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129685: Trunk vertebra.
Locality: UCMP V84002, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 128686: Trunk vertebra.
Locality: UCMP V84003, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129687: Caudal vertebra.
Locality: UCMP V84050, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129682: Left frontal, fragments of post-temporal, ?parietal, and other skull bones, and trunk vertebrae.
Locality: UCMP V84128, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129876: Trunk vertebrae, premaxilla, “parietal, preopercular, other skull fragments, and lepidotrichia.
Locality: UCMP V84130, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129878: Posterior trunk vertebra.
Locality: UCMP V84171, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 130147: Vertebra and tooth crown.
Locality: UCMP V84182, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 130289: Anterior trunk vertebra.
Locality: UCMP V84225, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 130144: 3 vertebrae, vertebra fragments and fin support.
UCMP 130145: Basiocipital and 3 vertebrae.
Locality: UCMP V84227, Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 130146: 2 vertebrae, fin support and skull fragments.
Locality: Garfield County, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
AMNH 6385: Anterior trunk vertebra.
AMNH 11600: Tooth crowns.
AMNH 11604: Opercular fragment.
LACM 37887, 30783, 30412, 126131: Vertebrae.
LACM 30412: Right dentary, 5 vertebrae, tooth crowns, basicranium and angular fragments.
LACM 37218: Opercular fragment.
Locality: Bug Creek Anthills, Montana.
Horizon: Upper Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129671: Trunk vertebra.
Locality: UCMP V5618, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 72700: Post-temporal.
Locality: UCMP V5620, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 54156, 56277: Trunk vertebrae.
UCMP 72467: Tooth crown.
Locality: UCMP V5711, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 56276: Vertebra fragment.
UCMP 72470: Vertebra fragment.
UCMP 72688: Toth crowns.
Locality: UCMP V5815, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 72647: Vertebra.
Locality: UCMP V5817, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 62936: Vertebra.
Locality: UCMP V5921, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 72469: Anterior left maxilla fragment.
Locality: UCMP V84216, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 129951, 129952: Vertebrae.
Locality: UW V79032, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UW 14276: Right maxilla.
UW 14621: Right maxilla fragment.
UW 14619: Left maxillary fragment.
UW 14618: Anterior right maxilla fragment.
UW 14623: Trunk vertebrae.
UW 14622: 4 caudal vertebrae.
UW 14620: Left maxilla fragment.
Locality: Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
CM 256: Trunk vertebrae.
YPM 6311: Trunk vertebrae.
Locality: North Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
UCMP 131681: Right dentary fragment.
UCMP 131707: Right ?parietal.
UCMP 131708: Skull fragments.
Locality: South Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
SDSM 64210: Anterior trunk vertebra
SDSM 64289, 64314, 64333, 64344, 64362: Tooth crowns.
Locality: New Mexico.
Horizon: Fruitland Formation.
Biostratigraphy:
Age: Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material:
MNA P1.809: 24 associated vertebrae and neural spines.
Locality: New Mexico.
Horizon: Fruitland Formation or Kirkland Formation.
Biostratigraphy:
Age: Campanian-Maastrichtian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material:
UNM B466, B-691, B-406A, B-415, B0437, B-699, B-704, B-094, B-165a, B-165, B0443: Vertebrae.
UNM B-5406: ?parietal.
Locality: New Mexico.
Horizon: Kirkland Formation.
Biostratigraphy:
Age: Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
LACM 55081, 55083, 55084, 55985: Vertebra fragments.
Locality: Montana
Horizon: Judith River Formation, Judith River Group.
Biostratigraphy:
Age: Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material:
UCMP 130632: Anterior trunk vertebrae.
Locality: Utah.
Horizon: Masuk Shale Member, Mancos Shale.
Biostratigraphy:
Age: Late Cretaceous.
Material:
UCM specimens: Vertebrae and tooth crowns.
HOGANSON & MURPHY, 2002
Locality: Stumpf Composite, ND99-15, SE ¼, SW ¼, sec. 34, T13N, R79W, Morton County, North Dakota.
Horizon: Breien Member, Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
ND 95-15.7: Tooth.
HOLYROD & HUTCHISON, 2002
Locality: V 86065, western North Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
172110:
Locality: V 86100, western North Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
172159:
Locality: V 86101, western North Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
172160, 172359:
HUNT & LUCAS, 1993
Locality: San Juan County, New Mexico.
Horizon: Bisti, Hunter Wash, Farmingotn and De-na-zin Members, Lower Kirtland Formation.
Biostratigraphy:
Age: Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
Number: Not given:
SULLIVAN, JASINSKI & WILLIAMSON, 2023 (published 2024)
Locality: North of Arroyo Pueblo Alto, McKinley County, New Mexico.
Horizon: Hunter Wash Member, Kirtland Formation.
Biostratigraphy: Kirtlandian land Vertebrate age.
Age: Late Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material:
NMNH P-88899: Skull roof, palate, adn braincase, both premaxillae, both frontals, both parietals, both dermopterotics, vomers, right dermosphenotic, prootics, intercalars, basioccipital/occipital condyle, associated with 5 large abdominal centra.
NMMNH P-88901: Nearly complete right frontal, associated with 1 complete abdominal centra dn 1 incomplete anterior abdominal centrum.
TOKARYK, 1997
Locality: Saskatchewan.
Horizon: Frenchman Formation.
Biostratigraphy:
Age: Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
P 2607.1: Dentary and vertebra.
WHITMORE, 1988
SDSM 12726
Locality: SDSM locality V851, Zerbst Locality, Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
SDSM 12716: 3 vertebral fragments.
Locality: SDSM locality V852, Hanson Locality, Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
SDSM 12727: 2 vertebral fragments.
Locality: SDSM locality V853, Leonard’s Lizard Site, Niobrara County, Wyoming.
Horizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, Late Maastrichtian Stage, Late Senonian Subepoch, Late Gulf Epoch, Late Cretaceous.
Material:
SDSM 12728: 1 vertebra.
_____________________________________________________________________________________
Species: chauliodous (HALL & WOLBERG, 1989)
Etymology:
= Amia? chauliodous HALL & WOLBERG, 1989
Holotype: KUVP 88378
Locality: Fossil Forest area south of Farmington and north of Chaco Canyon in portions of sectiosn 13, 14, 23, and 24, T23N, R12W, New Mexico.
Horizon: Fruitland Formation.
Biostratigraphy:
Age: Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material: An incomplete, disarticulated skeleton from an individual with an estimated standard length greater than two meters.
Paratype: KUVP 14241: A partial right maxilla.
Referred material:
SULLIVAN, 2006, SULLIVAN, LUCAS & JASINSKI, 2011
Locality: Denver's Blowout, SMP locality 281, Ah-Shi-Sle-Pah Wilderness Study Area, San Juan Basin, New Mexico.
Horizon: Hunter Wash Member, Kirtland Formation.
Biostratigraphy:
Age: Kirtlandian age, Upper Campanian Stage- Lower Maastrichtian Stage, Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.
Material:
SMP VP-1485: Incomplete skull and lower jaws.
Locality: Ah-shi-sle-pah Wash (east), SMP Locality 365, Ah-Shi-Sle-Pah Wilderness Study Area, San Juan Basin, New Mexico.
Horizon: Hunter Wash Member, Kirtland Formation.
Biostratigraphy:
Age: Kirtlandian age, Upper Campanian Stage- Lower Maastrichtian Stage, Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.
Material:
SMP VP-1086: Centrum.