Where: Navajo County, Arizona (34.9° N, 110.2° W: paleocoordinates 3.3° N, 38.8° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Holbrook Member (Moenkopi Formation), Aegean to Aegean (247.2 - 242.0 Ma)
• "well above the gypsiferous middle zone of the Moenkopi" and approx. 40 m above contact with Coconino Fm.
•Lucas & Schoch (2002: Lethaia 35: 97-106) inferred the Holbrook member to be earliest Anisian (Aegean–Bithynian) in age based upon tetrapod biostratigraphy (Eocyclotosaurus used to correlate Holbrook Member to German Upper Bundsandstein) and magnetostratigraphy
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; mudstone
Size class: macrofossils
Preservation: trace
Collected by Peabody; reposited in the UCMP
Collection methods: surface (in situ),
Primary reference: F. E. Peabody. 1948. Reptile and amphibian trackways from the Lower Triassic Moenkopi formation of Arizona and Utah. University of California Publications, Bulletin of the Department of Geological Sciences 27(8):295-468 [M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 52806: authorized by Matthew Carrano, entered by Matthew Carrano on 22.08.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
"Chirotherium marshalli" = Isochirotherium marshalli, "Chirotherium cf. marshalli" = Isochirotherium marshalli
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