Miquihuana4-3: Valanginian, Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Terebratulida - Terebratulidae
Terebratula sillimani Imlay 1937
Terebratula tamaulipana Imlay 1937
Bivalvia - Ostreida - Gryphaeidae
Exogyra reedi Imlay 1937
Exogyra putnami Imlay 1937
Exogyra tamaulipana Imlay 1937
Cephalopoda - Ammonitida - Neocomitidae
Thurmannites sp. Kilian and Reboul 1914
Gastropoda - Vermetidae
Vermetus sp. Daudin 1800
see common names

Geography
Country:Mexico State/province:Tamaulipas
Coordinates: 23.6° North, 99.8° West (view map)
Paleocoordinates:20.5° North, 53.2° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Cretaceous Epoch: Early Cretaceous
Stage: Valanginian 10 m.y. bin: Cretaceous 1
*Epoch:Neocomian
Key time interval: Valanginian
Age range of interval: 139.8 - 132.6 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Local section:Miquihuana Local bed:3
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: "limestone"
Geology comments: collection from the upper 10ft of bed; dk. blue-grey, phosphatic thin to medium bedded limestone; weathered faces appear ashy-grey and marly
Taphonomy
Modes of preservation:body,original calcite
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: this is one of three collections from this bed
Metadata
Database number:2127
Authorizer:M. Patzkowsky Enterer:K. Layou
Modifier:C. Visaggi Research group:marine invertebrate
Created:1999-06-22 15:12:49 Last modified:2004-03-11 16:25:06
Access level:the public Released:2000-11-20 13:53:14
Creative Commons license:CC BY
Reference information

Primary reference:
64. 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]