Roy Lamb Ranch (Triassic of the United States)

Where: Texas (32.0° N, 101.2° W: paleocoordinates 6.7° N, 41.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Colorado City Formation (Dockum Group), Norian (228.0 - 208.5 Ma)

• "pre-Tecovas horizon"; now referred to as Colorado City Formation

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; gypsiferous, brown, red claystone

Size class: macrofossils

Collected by Stovall, Price in 1931

Collection methods: surface (in situ),

• OMNH, Sam Noble Oklahoma Museum of Natural History

Primary reference: J. W. Stovall and J. B. Wharton Jr. 1936. A new species of phytosaur from Big Spring, Texas. Journal of Geology 44(2):183-192 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 135695: authorized by Richard Butler, entered by Richard Butler on 02.11.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Phytosauria - Parasuchidae
Angistorhinus alticephalus n. sp. Stovall and Wharton 1936 archosaur
OMNH 733, skull and dorsal vertebrae