Also known as Antrodemus type site
Where: Grand County, Colorado (40.1° N, 105.9° W: paleocoordinates 35.7° N, 52.6° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Morrison Formation, Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)
• bed-level stratigraphic resolution
Environment/lithology: pond; lithology not reported
Size class: macrofossils
Collected by F. V. Hayden in 1869; reposited in the USNM
Collection methods: surface (float),
Primary reference: J. Leidy. 1870. [Remarks on Poikilopleuron valens, Clidastes intermedius, Macrosaurus proriger, Baptemys wyomingensis, and Emys stevensonianus]. Proceedings of the Academy of Natural Sciences of Philadelphia 22(1):3-5 [M. Carrano/M. Carrano/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 52872: authorized by Matthew Carrano, entered by Matthew Carrano on 25.08.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
"Poicilopleuron valens n. sp." = Allosaurus fragilis
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