Sonsela "Nicrosaurus" (Triassic of the United States)

Where: Navajo County, Arizona (34.8° N, 109.9° W: paleocoordinates 10.5° N, 48.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• upper Sonsela Member; Revueltian LVF

• bed-level stratigraphic resolution

Environment/lithology: coarse channel fill; sandstone

Size class: macrofossils

Collection methods: surface (in situ),

Primary reference: A. P. Hunt, S. G. Lucas, and A. B. Heckert. 2002. A Revueltian (Norian) phytosaur from the Sonsela Member of the Petrified Forest Formation (Chinle Group: Upper Triassic), Petrified Forest National Park, Arizona. In A. B. Heckert, S. G. Lucas (eds.), Upper Triassic Stratigraphy and Paleontology, New Mexico Museum of Natural History and Science Bulletin 21:165-169 [R. Butler/R. Butler]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 93491: authorized by Richard Butler, entered by Richard Butler on 20.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Phytosauria - Parasuchidae
"Pseudopalatus sp." = Machaeroprosopus
"Pseudopalatus sp." = Machaeroprosopus Mehl 1916 archosaur
PEFO 31218, partial skull