Tezoatlan Upper (Jurassic of Mexico)

Where: Oaxaca, Mexico (17.8° N, 98.2° W: paleocoordinates 9.4° N, 48.1° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Upper Member (Rosario Formation), Middle Jurassic (174.7 - 161.5 Ma)

• similar to the Yorkshire Flora of England

• member-level stratigraphic resolution

Environment/lithology: gray, silty sandstone and black, carbonaceous shale

Size class: macrofossils

Collection methods: originally described in Erben, 1956b, p. 21

Primary reference: A. Silva-Pineda. 1978. Paleobotanica del Jurasico de Mexico. Universidad Nacional Autonoma de Mexico. Instituto de Geologia, Paleontologia Mexicana 44:1-16 [A. Rees/D. Sunderlin/D. Sunderlin]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 24725: authorized by Allister Rees, entered by Dave Sunderlin on 19.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Mexiglossa varia, Pelourdia sp.
Equisetopsida
 Pinidae - Pinidae
Araucarioxylon sp.
Araucarioxylon sp. Kraus 1870
Sphenopteridae
  - Sphenopteridae
Sphenopteris goeppertii
Cycadopsida
 Cycadales - Nilssoniaceae
Pseudoctenis lanei
Macrotaeniopteris
  -
Macrotaeniopteris sp.
Macrotaeniopteris sp. Schimper 1869
 Bennettitales -
Ptilophyllum cutchense, Ptilophyllum acutifolium, Otozamites cardiopteroides, Otozamites cf. hennoquei, Otozamites hespera, Otozamites sp., Williamsonia cuauhtemoci, Williamsonia huitzilopochtlii, Williamsonia nathorstii, Williamsonia netzahualcoyotlii, Williamsonia sp., Pterophyllum cf. munsteri, Pterophyllum sp., Pterophyllum rajmahalense, Anomozamites sp., Zamites diquiyui, Zamites lucerensis, Zamites oaxacensis, Zamites tribulosus, Cycadolepis mexicana
Otozamites sp. Braun 1843
Williamsonia sp. Carruthers 1870
Pterophyllum sp. Brongniart 1828
Anomozamites sp. Schimper 1870
Polypodiopsida
  -
Cladophlebis browniana
  - Dicksoniaceae
Dicksonia sp.
Dicksonia sp. L'Héritier de Brutelle 1788
 Cyatheales - Polypodiidae
Coniopteris arguta, cf. Coniopteris hymenophylloides
Coniopteris arguta scaly tree fern
cf. Coniopteris hymenophylloides Brongniart 1828 scaly tree fern
 Gleicheniales - Polypodiidae
Piazopteris branneri, Laccopteris sp.
Laccopteris sp. Presl 1838
= phlebopteris
 Equisetales - Equisetidae
"Equisetum rajmahalensis" = Equisetum rajmahalense
"Equisetum rajmahalensis" = Equisetum rajmahalense Oldham and Morris 1863 horsetail