USGS M614 float, Saurian Hill (Triassic of the United States)

Where: Pershing County, Nevada (40.3° N, 118.1° W: paleocoordinates 11.2° N, 42.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: meeki ammonoid zone, Fossil Hill Member (Prida Formation), Illyrian (247.2 - 242.0 Ma)

• From Meeki zone or higher

• bed-level stratigraphic resolution

Environment/lithology: basinal (); lithified, lenticular, gray limestone and lithified, calcareous siltstone

Size class: macrofossils

Collected by N.J. Silberling in 1956-1965; reposited in the USNM

Collection methods: surface (float),

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 33322: authorized by David Bottjer, entered by Catherine Powers on 25.07.2003, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ceratitida - Sturiidae
Sturia cf. japonica Diener 1916 ceratite
 Ceratitida - Aplococeratidae
Aplococeras smithi Silberling and Nichols 1982 ceratite
 Ceratitida - Ceratitidae
Eutomoceras dunni Smith 1904 ceratite
Frechites nevadanus Mojsisovics 1888 ceratite
 Ceratitida - Proteusitidae
Tropigastrites louderbacki Hyatt and Smith 1905 ceratite
 Aulacoceratida - Xiphoteuthididae
Atractites solidus Smith 1914 belemnite