NMMNH L-426, Garita Creek (Triassic of the United States)

Where: San Miguel County, New Mexico (35.3° N, 104.3° W: paleocoordinates 10.3° N, 43.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Garita Creek Formation (Chinle Group), Norian (228.0 - 208.5 Ma)

• Considered to be late Carnian (Adamanian) in age by the authors; however, recent radiometric dating suggests a Norian age for most or all of the Chinle. The Garita Creek Formation was formerly referred to as the "lower shale member of the Chinle Formation"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; conglomerate

• All specimens are from intraformational conglomerates

Size class: macrofossils

Reposited in the NMMNH

Primary reference: A. P. Hunt, S. G. Lucas, and P. L. Sealey. 1989. Paleontology and vertebrate biochronology of the Upper Triassic Garita Creek Formation, east-central New Mexico. New Mexico Journal of Science 29(2):61-68 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93584: authorized by Richard Butler, entered by Richard Butler on 25.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Plantae indet.1
NMMNH P-17543, wood fragment
Reptilia
  -
Reptilia indet.1 Laurenti 1768 reptile
NMMNH P-17530, 17532, 17533, 17536, 17537
 Loricata - Rauisuchidae
Rauisuchidae indet.1 rauisuchid
NMMNH P-17521, tooth fragments
 Pseudosuchia - Stagonolepididae
Stagonolepididae indet.1 Lydekker 1887 aetosaur
NMMNH P-17509, seven paramedian plate fragments
"Typothorax antiquum" = Typothorax coccinarum2 Cope 1875 aetosaur
NMMNH P-17508, five paramedian plate fragments
 Phytosauria - Parasuchidae
"Phytosauridae indet." = Mystriosuchinae1
"Phytosauridae indet." = Mystriosuchinae1 von Huene 1915 archosaur
NMMNH P-3688, four teeth. NMMNH P-17512, ten vertebrae. NMMNH P-17513, scute fragments. NMMNH P-17525, eight isolated teeth
 Diapsida -
Crocodylotarsi indet.1 Benton and Clark 1988 archosauromorph
NMMNH P-17505
Amphibia
 Temnospondyli - Metoposauridae
Metoposauridae indet.1 Watson 1919 tetrapod
NMMNH P- 17523, interclavicle fragments. NMMNH P-3667, four skull fragments