Where: Guadalupe County, New Mexico (35.2° N, 105.1° W: paleocoordinates 1.8° N, 34.9° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Anton Chico Member (Moenkopi Formation), Aegean to Aegean (247.2 - 242.0 Ma)
• Upper part of the Anton Chico member; equivalent to the Holbrook Member of the Moenkopi formation in Arizona
•
•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: lacustrine - small; lithified, gray mudstone and lithified, burrowed, gray sandstone
Size classes: macrofossils, mesofossils
Collected by Alex Velasquez, NMMNH field crew in 1997-1998; reposited in the NMMNH
Collection methods: bulk, quarrying,
• Vertebrae, ribs, pelvic and limb bones collected as float; gastralia, osteoderms and invertebrates collected in situ.
Primary reference: S. J. Nesbitt, S. G. Lucas, and R. R. Schoch. 2006. A new, large archosauriform from the Anton Chico Member of the upper Moenkopi Formation (Middle Triassic), east-central New Mexico, USA. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 239(2):289-311 [R. Butler/R. Butler]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 88068: authorized by Richard Butler, entered by Richard Butler on 31.03.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Branchiopoda | |
Conchostraca indet. Sars 1867 clam shrimp | |
Deuteropoda | |
Ostracoda indet. Latreille 1802 ostracod | |
Reptilia | |
Archosauriformes "new species" Gauthier 1986 archosauromorph NMMNH P-27269, P-43257, partial postcrania. May be an erythrosuchid or a basal crocodile-line archosaur
| |
Osteichthyes | |
? Dicynodontia indet. Owen 1859 dicynodont Cross section of limb bone and paired ?girdle fragments; may represent a single individual
| |
unclassified | |
Plantae indet. Haeckel 1866 |