Where: Baca County, Colorado (37.6° N, 102.9° W: paleocoordinates 37.0° N, 65.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Graneros Shale Formation (Colorado Group), Early/Lower Cenomanian (99.6 - 93.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; brown, gray, blue shale and white claystone

Size class: macrofossils

Collected by H. C. Markman; reposited in the DMNH

Primary reference: S. P. Welles. 1943. Elasmosaurid plesiosaurs with description of new material from California and Colorado. Memoirs of the University of California 13:125-254 [R. Benson/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 77350: authorized by Matthew Carrano, entered by Matthew Carrano on 09.01.2008

Creative Commons license: CC BY (attribution)