Lance Creek (AMNH 1892 general) (Cretaceous of the United States)

Where: Niobrara County, Wyoming (43.2° N, 104.5° W: paleocoordinates 49.6° N, 79.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Lance Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collected by AMNH, J. B. Hatcher in 1892; reposited in the AMNH, UNSM

Collection methods: quarrying, mechanical

Primary reference: C. W. Gilmore. 1928. Fossil lizards of North America. Memoirs of the National Academy of Sciences 22(3):1-201 [J. Head/J. Head/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 180016: authorized by Paul Barrett, entered by Terri Cleary on 06.07.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Amphibia
 Caudata - Urodela
Habrosaurus dilatus n. gen. n. sp.
Habrosaurus dilatus n. gen. n. sp. Gilmore 1928 siren
USNM 10749 (holotype), greater portion of left dentary with teeth; 10817, left dentary with broken tooth bases; 10813, left dentary with missing teeth
Reptilia
 Squamata - Teiidae
Lanceosaurus compressus n. sp. Gilmore 1928 squamates
AMNH 116 (holotype), posterior portion of right dentary with 8 teeth
 Squamata -
"Parasaniwa wyomingensis n. gen. n. sp." = Parasaniwa wyomingensis, "Parasaniwa obtusa n. sp." = Parasaniwa wyomingensis
"Parasaniwa wyomingensis n. gen. n. sp." = Parasaniwa wyomingensis Gilmore 1928 squamates
USNM 10797 (holotype), median portion of left dentary with one complete and two broken teeth
"Parasaniwa obtusa n. sp." = Parasaniwa wyomingensis Gilmore 1928 squamates
USNM 10798 (holotype), posterior portion of right dentary with one tooth
 Squamata - Anguidae
"Odaxosaurus obliquus" = Odaxosaurus piger
"Odaxosaurus obliquus" = Odaxosaurus piger Gilmore 1928 squamates
AMNH 114, fragment of jaw with posterior teeth
 Squamata - Xenosauridae
"Prionosaurus regularis n. gen. n. sp." = Exostinus lancensis
"Prionosaurus regularis n. gen. n. sp." = Exostinus lancensis Gilmore 1928 squamates
USNM 10750 (holotype), incomplete maxilla with 8 teeth