Where: Hidalgo, Mexico (20.3° N, 98.2° W: paleocoordinates 3.7° N, 47.2° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Bucklandi ammonoid zone, Huayacocotla Formation, Early/Lower Sinemurian to Early/Lower Sinemurian (196.5 - 189.6 Ma)
• Ammonoid zones: from Bucklandi Zone up to Upper Raricostatum Zone
Environment/lithology: basinal (siliceous); lithified sandstone
Size class: macrofossils
Preservation: cast, mold/impression
Collection methods: surface (in situ)
• the collections of the Instituto de Geología of Mexico (UNAM).
Primary reference: C. Meister, J. Blau, J.-L. Dommergues, R. Schlatter, R. Schmidt-Effing and K. Burk. 2005. Ammonites from the Lower Jurassic (Sinemurian) of Tenango de Doria (Sierra Madre Oriental, Mexico). Part IV: Biostratigraphy, palaeobiogeography and taxonomic addendum. Revue de Paléobiologie 24(1):365-384 [J. Pálfy/D. Juhász]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 208369: authorized by József Pálfy, entered by Dorina Juhász on 01.04.2020
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Phylloceras sp. Suess 1865 ammonite | |
Euerbenites bravoi ammonite
Euerbenites corinnae ammonite | |
| |
Gleviceras aztecorum, "Oxynoticeras palomense" = Gleviceras palomense
Gleviceras aztecorum ammonite
"Oxynoticeras palomense" = Gleviceras palomense Erben 1956 ammonite | |
Plesechioceras cihuacoatlae, Plesechioceras cf. domeykoense, Plesechioceras sp., Paltechioceras tardecrescens
Plesechioceras cihuacoatlae ammonite
Plesechioceras cf. domeykoense ammonite
Plesechioceras sp. Trueman and Williams 1925 ammonite
Paltechioceras tardecrescens Buckman 1914 ammonite | |
Ectocentrites aff. dommerguesi ammonite
Ectocentrites sp. Canavari 1888 ammonite |