Miquihuana8-4 (Cretaceous of Mexico)

Where: Tamaulipas, Mexico (23.6° N, 99.8° W: paleocoordinates 20.5° N, 53.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Valanginian (139.8 - 132.9 Ma)

• bed-level stratigraphic resolution

Environment/lithology: limestone and shale

• limestone, thin-bedded to shaly, lt. grey; marly and silty shales

Preservation: original calcite

Primary reference: R. W. Imlay. 1937. Lower Neocomian fossils from the Miquihuana region, Mexico. Journal of Paleontology 11(7):552-574 [M. Patzkowsky/K. Layou/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 2132: authorized by Mark Patzkowsky, entered by Karen Layou on 22.06.1999, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Gryphaeidae
Exogyra putnami Imlay 1937 oyster
Exogyra reedi Imlay 1937 oyster
Cephalopoda
 Ammonitida - Olcostephanidae
Olcostephanus filifer Imlay 1937 ammonite
"R. filfer" - originally entered as "Rogersites aff. R. filfer"
 Ammonitida - Neocomitidae
Thurmannites novihispanicus Imlay 1937 ammonite