Gilliland Canyon float (Permian of the United States)

Where: Texas (30.4° N, 103.3° W: paleocoordinates 1.4° N, 33.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Willis Ranch Member (Word Formation), Roadian (272.3 - 268.8 Ma)

• Third limestone member

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Collected by Norman Newell; reposited in the AMNH

Primary reference: M. Kelly and R. Zangerl. 1976. Helicoprion (Edestidae) in the Permian of West Texas. Journal of Paleontology 50(5):992-994 [M. Clapham/P. Elliott/P. Elliott]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152125: authorized by Matthew Clapham, entered by Matthew Clapham on 08.11.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Eugeneodontiformes - Helicoprionidae
Helicoprion davisii Woodward 1886 chimaera
AMNH 7211