Where: Veracruz, Mexico (21.2° N, 98.3° W: paleocoordinates 8.8° N, 46.4° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Huayacocotla Formation, Early/Lower Jurassic to Early/Lower Jurassic (201.3 - 163.5 Ma)
• Transition between Totolap and Divisadero Formations
• formation-level stratigraphic resolution
Environment/lithology:
Size class: macrofossils
Collection methods: Some original characterization of this flora is in Imlay et al., 1948, p. 1750; Diaz-Lozano (1916)
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: biostratigraphic analysis
PaleoDB collection 24736: authorized by Allister Rees, entered by Dave Sunderlin on 19.08.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Equisetopsida | |
"? Cheirolepis sp." = Hirmeriella
"? Cheirolepis sp." = Hirmeriella Hörhammer 1933 | |
Sphenopteridae | |
Sphenopteris sp. Sternberg 1825 | |
Polypodiopsida | |
? Piazopteris sp. Lorch 1969 | |
Cycadopsida | |
Sphenozamites sp. Brongniart 1849 cycads | |
Podozamites sp. Braun 1843 podocarp | |
Zamites lucerensis, Zamites sp., Otozamites cf. hennoquei, Otozamites hespera, Otozamites sp., Otozamites cf. pterophylloides, Pterophyllum propiquum, Pterophyllum sp., Ptilophyllum sp.
Zamites sp. Brongniart 1828
Otozamites sp. Braun 1843
Otozamites cf. pterophylloides Brongniart 1870
Pterophyllum sp. Brongniart 1828
Ptilophyllum sp. Morris 1840 |