Where: Garfield County, Colorado (39.8° N, 106.3° W: paleocoordinates 15.8° N, 45.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Chinle Formation, Norian to Norian (228.0 - 201.3 Ma)

• "The tetrapod assemblage is regarded as middle–late Norian in age (Revueltian land vertebrate faunachron)" - Pardo et al. (2017)

•From the informally named "red siltstone member"

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; lithified, red siltstone

Size class: macrofossils

Reposited in the DMNH

Collection methods: surface (in situ),

Primary reference: B. J. Small. 1998. The occurrence of Aetosaurus in the Chinle Formation (Late Triassic, USA) and its biostratigraphic significance. Neues Jahrbuch für Geologie und Paläontologie Monatshefte 1998:285-296 [R. Butler/R. Butler]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92089: authorized by Richard Butler, entered by Richard Butler on 29.10.2009, edited by Emma Dunne and Matthew Carrano

Creative Commons license: CC BY (attribution)