538A 1981 (Triassic of Mexico)

Also known as Las Chinitas

Where: Sonora, Mexico (28.6° N, 109.4° W: paleocoordinates 3.1° N, 46.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Santa Clara Formation (Barranca Group), Carnian (237.0 - 228.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology:

Size class: macrofossils

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: A. Zambrano Garcia and R. Weber. 1985. Nuevo ensayo de un panorama de la paleoecologia de comunidades de la tafoflora Santa Clara (Triasico Tardio, Sonora). III Congreso Latinoamericano de Paleontologia. Mexico. Simposio sobre Floras del Triasico Tardio, Su Fitogeografia y Paleoecologia. Memoria 153-163 [A. Rees/D. Sunderlin/S. Bruning]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 24041: authorized by Allister Rees, entered by Dave Sunderlin on 29.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Macrotaeniopteris
  -
Macrotaeniopteris sp. Schimper 1869
Polypodiopsida
 Marattiales - Marattiidae
Mertensides sp., "Pecopteris falcatus" = Asterocarpus falcatus
Mertensides sp. Fontaine 1883
"Pecopteris falcatus" = Asterocarpus falcatus Emmons 1856
Pteropsida
 Filicinae -
Alethopteris whitneyi Newberry 1876
 Bennettitales -
 Coniferales -
Desmiophyllum sp. Lesquereux 1878
 Coniferales - Podocarpaceae