NMMNH 4576 (Jurassic to of the United States)

Where: Coconino County, Arizona (37.0° N, 111.2° W: paleocoordinates 24.2° N, 48.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Navajo Sandstone Formation (Glen Canyon Group), Pliensbachian to Pliensbachian (190.8 - 174.1 Ma)

• bed-level stratigraphic resolution

Environment/lithology: interdune; fine-grained, red sandstone and limestone

• The fossils are encased in a fine-grained, light red sandstone that contains elongate clasts of dark red shale and gray limestone (or dolostone)

Size class: macrofossils

Collected by G. Bryant, R. Cushman; reposited in the NMMNH

Collection methods: surface (float),

Primary reference: L. F. Rinehart, A. B. Heckert, G. Bryant, S. G. Lucas, and R. Cushman. 2001. Protosuchid crocodylomorphs from the Lower Jurassic Navajo Sandstone of north-central Arizona. Mesa Southwest Museum Bulletin 8:25-31 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 137232: authorized by Richard Butler, entered by Richard Butler on 13.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Loricata -
Crocodylomorpha indet. Hay 1930 crocodilian
NMMNH P-33097, 33098