San Jon (Upper Brown Horizon): Albian, New Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Pectinida - Neitheidae
Neithea occidentalis Conrad 1855
Bivalvia - Pectinida - Plicatulidae
Plicatula cf. incongrua
Bivalvia - Ostreida - Gryphaeidae
Texigryphaea pitcheri
Bivalvia - Ostreida - Ostreidae
Peilinia n. gen. levicostata Kues 1997
see common names

Geography
Country:United States State/province:New Mexico County:Quay
Coordinates: 35.1° North, 103.3° West (view map)
Paleocoordinates:33.7° North, 62.1° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Albian 10 m.y. bin:Cretaceous 4
Key time interval:Albian
Age range of interval:113.00000 - 100.50000 m.y. ago
Stratigraphy
Formation:Tucumcari
Stratigraphic resolution:group of beds
Stratigraphy comments: several beds within 1.5-2.0 m
Lithology and environment
Primary lithology:brown,gray "shale"
Secondary lithology: siltstone
Lithology description: "1.5-2.0 m of light brown to grayish-brown shale, siltstone, and a 0.3-m-thick sandstone ledge"
Environment:shoreface
Geology comments: "open bay to lower to upper shoreface environments"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:37562
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:marine invertebrate
Created:2004-03-16 21:08:33 Last modified:2004-03-16 23:08:34
Access level:the public Released:2004-03-16 21:08:33
Creative Commons license:CC BY
Reference information

Primary reference:
10048. B. S. Kues. 1997. New bivalve taxa from the Tucumcari Formation (Cretaceous, Albian), New Mexico, and the biostratigraphic significance of the basal Tucumcari fauna. Journal of Paleontology 71(5):820-839 [J. Alroy/J. Alroy/J. Alroy]