USGS M2358, spur between Star and Bloody Canyons (Triassic of the United States)

Where: Nevada (40.5° N, 118.1° W: paleocoordinates 11.1° N, 41.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Lenotropites caurus ammonoid zone, Fossil Hill Member (Prida Formation), Aegean (247.2 - 242.0 Ma)

• Approximately 150 ft (45 m) stratigraphically above base of Fossil Hill Member of Prida Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone and lithified siltstone

Size class: macrofossils

Collected by N.J. Silberling in 1964; reposited in the USNM

Primary reference: N. J. Silberling and K. M. Nichols. 1982. Middle Triassic Molluscan Fossils of Biostratigraphic Significance from the Humboldt Range, Northwestern Nevada. Geological Survey Professional Paper 1207 [A. McGowan/A. McGowan/A. McGowan]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 143265: authorized by Matthew Clapham, entered by Matthew Clapham on 22.04.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ceratitida - Gymnitidae
Gymnites tregorum n. sp. Silberling and Nichols 1982 ceratite
 Ceratitida - Longobarditidae
Lenotropites caurus McLearn 1948 ceratite
 Ceratitida - Acrochordiceratidae
Paracrochordiceras americanum McLearn 1946 ceratite
 Ceratitida - Isculitidae
Isculites meeki Hyatt and Smith 1905 ceratite