NMMNH locality 9095, Cerros de Amado B (Carboniferous of the United States)

Where: Socorro County, New Mexico (34.1° N, 106.8° W: paleocoordinates 1.6° S, 38.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Tinajas Member (Atrasado Formation), Kasimovian (307.0 - 303.7 Ma)

• Stratigraphically high in the Tinajas Member of the Atrasado Formation. Conodonts from the Tinajas Member indicate that the upper part of the member, including the bed that produced the chondrichthyan fossil, is of late Missourian (late Kasimovian) age, close to the Missourian-Virgilian boundary.

• bed-level stratigraphic resolution

Environment/lithology: shoreface; lithified, coarse-grained, calcareous sandstone

• Lucas et al. (2009) interpreted such sandstones in the Tinajas Member as the deposits of subtidal marine channels
• Coarse-grained, trough-cross-bedded, crinoidal sandstone

Size class: macrofossils

Reposited in the NMMNH

Primary reference: W. M. Itano and S. G. Lucas. 2018. A revision of Campyloprion Eastman, 1902 (Chondrichthyes, Helicoprionidae), including new occurrences from the Upper Pennsylvanian of New Mexico and Texas, USA. Acta Geologica Polonica 68:403-419 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 196772: authorized by Matthew Clapham, entered by Matthew Clapham on 06.10.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Eugeneodontiformes - Helicoprionidae
"Campyloprion cf. ivanovi" = Karpinskiprion ivanovi
"Campyloprion cf. ivanovi" = Karpinskiprion ivanovi Karpinsky 1924 chimaera
NMMNH P-68551