Where: Coconino County, Arizona (35.9° N, 111.3° W: paleocoordinates 11.7° N, 49.4° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Blue Mesa Member (Chinle Formation), Norian (228.0 - 208.5 Ma)
• member-level stratigraphic resolution
Environment/lithology: terrestrial; lithology not reported
Size class: macrofossils
Collected by B. Brown, R. Bird in 1936; reposited in the AMNH
Collection methods: quarrying,
Primary reference: E. H. Colbert. 1947. Studies of the phytosaurs Machaeroprosopus and Rutiodon. Bulletin of the American Museum of Natural History 88:53-96 [R. Butler/R. Butler]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 93547: authorized by Richard Butler, entered by Richard Butler on 22.01.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
| Reptilia | |
"Machaeroprosopus gregorii" = Smilosuchus gregorii, Leptosuchus sp.
"Machaeroprosopus gregorii" = Smilosuchus gregorii Camp 1930 archosaur AMNH 3060, complete skull, jaws, postcrania
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