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 | |
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