Miquihuana3-3 (Cretaceous of Mexico)

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

• Paleocoordinates: 19.5° N, 41.0° W (Wright 2013)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Valanginian (137.1 - 132.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: limestone

• collection from the middle of bed; dk. blue-grey, phosphatic thin to medium bedded limestone; weathered faces appear ashy-grey and marly

Preservation: original calcite

Collection methods: this is one of three collections from this bed

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 2128: authorized by Mark Patzkowsky, entered by Karen Layou on 22.06.1999

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Neocomitidae
"Thurmannites sp." = Thurmanniceras
"Thurmannites sp." = Thurmanniceras Cossmann 1901 ammonite
Bivalvia
 Ostreida - Gryphaeidae
Exogyra tamaulipana, "Exogyra putnami" = Aetostreon subsinuatum, Exogyra reedi
Exogyra tamaulipana Imlay 1937 oyster
"Exogyra putnami" = Aetostreon subsinuatum Leymerie 1842 oyster
Exogyra reedi Imlay 1937 oyster
 Pectinida - Pectinoidae
Pecten sp.
Pecten sp. Müller 1776 scallop
"sp. B" - originally entered as "Pecten sp. B"
Gastropoda
 Sorbeoconcha - Vermetidae
Vermetus sp.
Vermetus sp. Daudin 1800 worm shell
Rhynchonellata
 Terebratulida - Terebratulidae
Terebratula sillimani, Terebratula tamaulipana