NMMNH L-420, Garita Creek (Triassic of the United States)

Where: San Miguel County, New Mexico (35.3° N, 104.4° W: paleocoordinates 10.3° N, 43.8° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• 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 93604: authorized by Richard Butler, entered by Richard Butler on 26.01.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Unionida - Unionidae
Unio sp. Philipsson 1788 freshwater mussel
NMMNH P-3671
Reptilia
 Archosauria -
Archosauria indet. Cope 1869 archosaur
NMMNH P-17592
 Pseudosuchia - Stagonolepididae
Typothorax sp. Cope 1875 aetosaur
NMMNH P-17568, two paramedian plate fragments
cf. Desmatosuchus sp. Case 1920 aetosaur
NMMNH P-3668, conical spike
 Phytosauria - Parasuchidae
"Phytosauridae indet." = Mystriosuchinae
"Phytosauridae indet." = Mystriosuchinae von Huene 1915 archosaur
NMMNH P-17596, jaw fragment