John Brown Canyon HB 250, northern Humboldt Range (Triassic of the United States)

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

• coordinate estimated from map

• small collection-level geographic resolution

When: Pseudokeyserlingites guexi beds ammonoid zone, Fossil Hill Member (Prida Formation), Aegean (247.2 - 242.0 Ma)

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Reposited in the USNM

Primary reference: H. Bucher. 1989. Lower Anisian ammonoids from the northern Humboldt Range (northwestern Nevada, USA) and their bearing upon the Lower-Middle Triassic boundary. Eclogae Geologicae Helvetiae 82:945-1002 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138818: authorized by Matthew Clapham, entered by Matthew Clapham on 28.01.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ceratitida - Sibiritidae
Pseudokeyserlingites guexi Bucher 1989 ceratite