Notch on Elk Ridge (Triassic of the United States)

Where: Utah (37.9° N, 109.9° W: paleocoordinates 7.4° N, 41.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Shinarump Member (Chinle Formation), Carnian (237.0 - 228.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology:

Size class: macrofossils

Collection methods: surface (float), surface (in situ), mechanical,

Primary reference: S. Ash. 2001. New cycadophytes from the Upper Triassic Chinle Formation of the southwestern United States. PaleoBios 21(1):15-28 [A. Rees/D. Sunderlin/D. Sunderlin]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25094: authorized by Allister Rees, entered by Dave Sunderlin on 28.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Cycadopsida
 Cycadales -
"Nilssonia lewisii n. sp." = Nilsonia
"Nilssonia lewisii n. sp." = Nilsonia cycads