USGS M8700: Early/Lower Campanian - Middle Campanian, Texas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea - Salenioida - Saleniidae
Salenia hondoensis Cooke 1953
Echinoidea - Clypeasteroida - Faujasiidae
Phyllobrissus cubensis (Weisbord 1934)
recombined as Petalobrissus cubensis
unclassified
informal Inoceramid indet.
Echinoidea - Spatangoida - Schizasteridae
Proraster dalli (Clark 1891)
Cephalopoda - Ammonitida - Baculitidae
Baculites taylorensis Adkins 1929
Gastropoda - Turritellidae
? Turritella sp. Lamarck 1799
originally entered as "?Turritella sp."
Gastropoda - Naticidae
Gyrodes cf. major Wade 1926
originally entered as "Gyrodes cf. major"
Euspira cf. rectilabrum (Conrad 1858)
originally entered as "Euspira cf. rectilabrum"
Gastropoda - Capulidae
Capulus aff. cuthandensis
"n. sp. aff. cuthandensis" - originally entered as "Capulus n. sp. aff. cuthandensis"
Gastropoda - Neogastropoda - Fasciolariidae
Graphidula sp. Stephenson 1941
Gastropoda - Neogastropoda - Paladmetidae
? Paladmete aff. cancelleria
originally entered as "Paladmete? aff. cancelleria"
Bivalvia - Pectinida - Pectinidae
Camptonectes burlingtonensis
Bivalvia - Pectinida - Neitheidae
Neithea quinquecostata (Sowerby 1814)
Bivalvia - Pectinida - Anomiidae
Paranomia cf. scabra
originally entered as "Paranomia cf. scabra"
Bivalvia - Ostreida - Gryphaeidae
Exogyra sp. Say 1820
Pycnodonte sp. (Fischer von Waldheim 1835)
Bivalvia - Arcida - Cucullaeidae
Cucullaea sp. Lamarck 1801
Bivalvia - Cardiida - Cardiidae
Protocardia spillmani
Bivalvia - Poromyida - Poromyidae
Liopistha alternata
Bivalvia - Carditida - Crassatellidae
Crassatella cf. hodgei (Stephenson 1923)
originally entered as "Crassatella cf. hodgei"
see common names

Geography
Country:United States State/province:Texas County:Medina
Coordinates: 29.4° North, 98.9° West (view map)
Paleocoordinates:34.9° North, 72.1° West
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
*Epoch:Senonian
*International age/stage:Middle Campanian
Key time interval:Early/Lower Campanian - Middle Campanian Ammonoid zone: Baculites sp. (weak flank ribs) - Baculites sp. (smooth)
Age range of interval:83.60000 - 72.10000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Anacacho Limestone
Stratigraphic resolution:member
Stratigraphy comments: Swezey and Sullivan (2004) correlate the Anacacho LS to the Baculites sp. (weak flank ribs), Baculites sp. (smooth) zone, which is late upper Campanian in Gradstein et al., 2004, through the Baculites maclearni zone., which is middle Campanian in Gradstein et al., 2004.
Lithology and environment
Primary lithology: "carbonate"
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Museum repositories:USGS
Metadata
Database number:3611
Authorizer:M. Patzkowsky Enterer:K. Layou
Modifier:P. Wagner Research group:GCP,marine invertebrate
Created:1999-08-05 11:57:15 Last modified:2021-07-09 20:50:46
Access level:the public Released:1999-08-05 11:57:15
Creative Commons license:CC BY
Reference information

Primary reference:
216. W. P. Elder. 1996. Bivalves and Gastropods from the Middle Campanian Anacacho Limestone, south central Texas. Journal of Paleontology 70(2):247-271 [M. Patzkowsky/K. Layou/J. Alroy]

Secondary references:

29915 J. A. Sessa, T. J. Bralower, M. E. Patzkowsky, J. C. Handley, and L. C. Ivany. 2012. Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the US Gulf Coastal Plain. Paleobiology 38(2):218-239 [M. Patzkowsky/J. Sessa/J. Sessa]