Blue Mesa NW (UCMP V82244, PFV 113) (Triassic of the United States)

Where: Apache County, Arizona (34.9° N, 109.8° W: paleocoordinates 10.6° N, 48.3° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• Long & Murry (1995) listed this as "lower Petrified Forest"; Parker & Irmis (2005: fig. 8) show this as in the upper part of the Blue Mesa Member

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; siltstone

• "variegated siltstone bed"

Size class: macrofossils

Collected by UCMP in 1982; reposited in the UCMP

Primary reference: R. A. Long and P. A. Murry. 1995. Late Triassic (Carnian and Norian) tetrapods from the southwestern United States. New Mexico Museum of Natural History and Science Bulletin 4:1-254 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 93118: authorized by Richard Butler, entered by Richard Butler on 05.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

 Dipnoi - Arganodontidae
Arganodus sp. Martin 1979 lungfish
 Temnospondyli - Metoposauridae
"Buettneria perfecta" = Koskinonodon perfectus
"Buettneria perfecta" = Koskinonodon perfectus Case 1922 tetrapod
UCMP, mandible and plate fragments
 Pseudosuchia - Stagonolepididae
"Stagonolepis wellesi" = Calyptosuchus wellesi
"Stagonolepis wellesi" = Calyptosuchus wellesi Long and Ballew 1985 archosaur
UCMP 126947, knob of paramedian scute
 Phytosauria - Parasuchidae
Leptosuchus sp. Case 1922 archosaur
UCMP, left and right squamosals, partial scapula, ilium, scute
 Therapsida - Stahleckeriidae
? Placerias sp. Lucas 1904 dicynodont
UCMP, radius with tooth marks