Tlahualompa (Triassic of Mexico)

Where: Hidalgo, Mexico (20.7° N, 98.5° W: paleocoordinates 3.1° S, 47.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Huizachal Formation, Late/Upper Triassic (237.0 - 201.3 Ma)

Environment/lithology: green, sandy siltstone and gray, green, conglomeratic sandstone

Size class: macrofossils

Primary reference: A. Silva-Pineda. 1981. Asterotheca y plantas asociadas de la Formacion Huizachal (Triasico Superior) del estado de Hidalgo. Univeridad Nacional Autonoma de Mexico, Instituto de Geologia Revista 5(1):47-54 [A. Rees/D. Sunderlin/D. Sunderlin]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 24656: authorized by Allister Rees, entered by Dave Sunderlin on 14.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Asterotheca
  -
Pteridopsida
  - Marattiaceae
Mertensides bullatus Bunbury 1847
 Osmundales - Osmundaceae