PM3-Eastern Coahuila(MEX) (Cretaceous to of Mexico)
Where: Coahuila, Mexico (27.0° N, 102.0° W: paleocoordinates 23.8° N, 54.3° W)
• small collection-level geographic resolution
When: Unnamed Shales Member, Valanginian to Valanginian (139.8 - 139.8 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: gray shale and limestone
• brown and grey shales and sandy shales with intercalated beds of brownish-grey, even-bedded limestone ranging up to several feet in thickness; weathers brownish-yellow; a marly bed at the base contains the fossils of the collection
Primary reference: R. W. Imlay. 1940. Neocomian Faunas of Northern Mexico. Geological Society America Bulletin 51(1):117-190 [M. Patzkowsky/K. Layou/A. Clement]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 2150: authorized by Mark Patzkowsky, entered by Karen Layou on 23.06.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Gastropoda | |
|
Vermetus cornejoi Castillo and Aguilera 1895 worm shell | |
| Bivalvia | |
Exogyra reedi, "Exogyra putnami" = Aetostreon subsinuatum
Exogyra reedi Imlay 1937 oyster
"Exogyra putnami" = Aetostreon subsinuatum Leymerie 1842 oyster | |