Helfin local fauna (Cretaceous of the United States)

Where: Brown County, Texas (31.9° N, 98.9° W: paleocoordinates 29.6° N, 58.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Paluxy Formation (Trinity Group), Albian (113.0 - 100.5 Ma)

Environment/lithology: marine; lithology not reported

Size class: mesofossils

Primary reference: J. T. Thurmond. 1971. Cartilaginous fishes of the Trinity Group and related rocks (Lower Cretaceous) of north central Texas. Southeastern Geology 13:207-227 [M. Carrano/M. Carrano/M. Oreska]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 99153: authorized by Matthew Carrano, entered by Matthew Oreska on 29.10.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1834 elasmobranch
 Rajiformes -
"Hypolophus mcnultyi" = Pseudohypolophus mcnultyi
"Hypolophus mcnultyi" = Pseudohypolophus mcnultyi Thurmond 1971 guitarfish