Canyon de Chelly (AZ) (Triassic of the United States)

Also known as USGS locality 10093; Museum of Northern Arizona (MNA) locality 200

Where: Arizona (35.0° N, 110.0° W: paleocoordinates 10.4° N, 48.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Monitor Butte Member (Chinle Formation), Late/Upper Triassic (237.0 - 201.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; fine-grained, gray sandstone and gray mudstone

• The plant-bearing unit is about 2 m thick and is composed of grey, fine-grained, flaggy sandstone and an underlying bed of massive grey mudstone. Rocks in the fossil bearing unit are relatively soft and usually form a slope below a prominent ledge of hard, brown sandstone.

Size class: macrofossils

Reposited in the USNM

Primary reference: S. R. Ash. 1972. Late Triassic plants from the Chinle Formation in north-eastern Arizona. Palaeontology 15(4):598-618 [D. Royer/D. Royer/D. Royer]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34886: authorized by Dana Royer, entered by Dana Royer on 09.10.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Masculostrobus
  -
Lycopsida
  - Selaginellaceae