north of Lance Creek (Cretaceous of the United States)

Also known as Claosaurus annectens plesiotype

Where: Niobrara County, Wyoming (43.3° N, 104.6° W: paleocoordinates 49.7° N, 79.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by J. B. Hatcher in 1892; reposited in the YPM

Collection methods: quarrying, mechanical,

Primary reference: C. E. Beecher. 1902. The reconstruction of a Cretaceous dinosaur, Claosaurus annectens Marsh. Transactions of the Connecticut Academy of Arts and Sciences 11:311-324 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 46209: authorized by Matthew Carrano, entered by Matthew Carrano on 07.01.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Hadrosauridae
"Claosaurus annectens" = Edmontosaurus annectens
"Claosaurus annectens" = Edmontosaurus annectens Marsh 1892 hadrosaurine
plesiotype, YPM 2182