Genus: Eolambia KIRKLAND, 1998
Etymology: Refers to the early occurrence of this lambeosaurine and is a contraction for “dawn lambeosaurine”. The name Eolambia was suggested by paleoartist Mike Skrepnick of Alberta, Canada.
= “Eohadrosaurus” KIRKLAND, 1997 (nomen nudum)
= Lambeosauridae nova BURGE, 1996

Species: caroljonesa KIRKLAND, 1998
Etymology: In honor of Carol Jones of Salt Lake City, Utah, who discovered the site.
= “Eohadrosaurus caroljonesi” KIRKLAND, 1997 (nomen nudum)

Holotype: CEUM 9758

Locality: Carol Site, CEUM Locality # 42em366v, east of Castle Dale, Northwestern San Rafael Swell, Emery County, Utah.

Horizon: Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material: Disarticulated partial adult skeleton including paired frontals and partial parietals, poorly preserved braincase, right and left maxilla, right and left jugals, right postorbital, lower portion of right quadrate, left dentary, atlas, cervical vertebra, anterior dorsal vertebra, proximal ischium, fragment of tibia and right fibula.

Refered material:

McDONALD, BIRD, KIRLAND & DODSON, 2012

CEUM 8786: Isolated left femur.

Paratype:

CEUM 5212

Locality: CEUM Locality # 42em369v, east of Castle Dale, Northwestern San Rafael Swell, Emery County, Utah.

Horizon: Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:: Partial skull and partial forelimb of a large adult.

Referred material:

Locality: OMNH V237, Northwestern San Rafael Swell, Emery County, Utah.

Horizon: Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

Number: Not given: Partial juvenile skeleton including numerous vertebral centra and neural spines, right and left scapula, right ulna, right ilium, partial ischium, right and left fragmentary distal femurs, right and partial left tibia, distal 2/3 of right and fragment of left tibia, metatarsals, and phalanges.

 


Locality: OMNH v824, Northwestern San Rafael Swell, Emery County, Utah.

Horizon: Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

OMNH (number?): Partial juvenile skeleton with parts of skull, including right premaxilla, left squamosal, left exoccipital, left prefrontal, left dentary, dorsal vertebra, isolated neural arch, left humerus, proximal right humerus, right ulna, metacarpals, and partial right tibia.

OMNH 04218: Left prefrontal, juvenile.

OMNH 28511: Dentary.

OMNH 28915: Right humerus, damaged proximal end.

OMNH 28916: Left squamosal, juvenile.

OMNH 28917: Ulna.

OMNH 28918: Dorsal vertebra.

OMNH 28919: Right premaxilla, juvenile.

OMNH 28921: Exoccipital-opisthotic.

OMNH 30997: Humerus.

OMNH 30998: Metacarpal V.

OMNH 30999: Metacarpal II.

OMNH 31004: Metacarpal III.

 


Locality: OMNH v824, Northwestern San Rafael Swell, Emery County, Utah.

Horizon: Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

OMNH 27749: Partial skeleton, including sacrum and ischium excavated to date (1998)

 

Locality: OMNH v214, Northwestern San Rafael Swell, Emery County, Utah.

Horizon: Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

OMNH 24389: Isolated left ischium.

 


Locality: OMNH v866, Northwestern San Rafael Swell, Emery County, Utah.

Horizon: Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

OMNH 32812: Partial skeleton mostly unexcavated, including 2 caudal vertebrae and a partial scapula.

 


BIRD, BURGE & CICCONETTI, 2002, GARRISON, BRINKMAN, NICHOLS, LAYER, BURGE & THAYN, 2007

Locality: Eolambia II (Eo 2) site (Cifelli #2 Quarry), Emery County, Utah.

Horizon: Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

Number: Not given: Disarticulated juvenile individuals.

CEUM 2191: Dentary of an adult.

CEUM 14411, CEUM 35594, 34345: Baby dentaries.

CEUM 35632, 35467, 34447, 34342, 35714: Juvenile dentaries.

CEUM 13433, 35557, 34441, 14451, 34412, 34405, 14489: 7 juvenle ulnae.

 


MAXWELL, 2002

Locality: Central Utah.

Horizon: Uppermost Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

Number: Not given: Remains of at least 11 individuals.

 

McDONALD, BIRD, KIRLAND & DODSON, 2012

Locality: Eolambia #2 quarry (CEUM locality 42em432v), Mussentuchit Wash, south of Emery, Emery County, Utah.

Horizon: Uppermost Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

CEUM Collection, MNI = 12: Disarticulated juvenile cranial and postcranial material.

 

Locality: Willow Springs 8 quarry (CEUM loclaity 42Em576), Mussentuchit Wash, south of Emery, Emery County, Utah.

Horizon: Uppermost Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Mussentuchitan age, Uppermost Albian-Lowermost Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material:

CEUM collection, MNI = 4: Disarticulated juvenile cranial and postcranial skeleton.

 

 

= Iguanodon ottingeri BURGE, 1996

Locality: Price River Site, Site 42EM366V, south of Price and also south of I-70 between Moab and the Utah-Colorado Border, Utah.

Horizon: Mussentuchit Member, Uppermost Cedar Mountain Formation.

Biostratigraphy:

Age: Buffalogapian age, Barremian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given: A partly articulated section of the caudal vertebrae with chevrons.