2 miles east of Tanners Crossing (Triassic of the United States)

Also known as Machaeroprosopus holotype

Where: Coconino County, Arizona (35.9° N, 111.3° W: paleocoordinates 11.7° N, 49.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Petrified Forest Member (Chinle Formation), Norian (228.0 - 208.5 Ma)

• Long & Murry (1995: 3) noted that this locality was "high in the Petrified Forest Member"

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by Mehl & Schwartz in 1914

Collection methods: quarrying, surface (in situ),

Primary reference: M. G. Mehl. 1916. New or little known phytosaurs from Arizona. University of Oklahoma Bulletin 103:5-28 [R. Butler/R. Butler/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93552: authorized by Richard Butler, entered by Richard Butler on 22.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Phytosauria - Parasuchidae
? Angistorhinus sp. Mehl 1913 archosaur
UW 3810, right jaw ramus
Machaeroprosopus validus n. gen. n. sp. Mehl 1916 archosaur
UW 3807, skull and jaws (holotype, specimen lost). UW 3808, 3809, posterior skulls (specimens lost)