P-15 (Brazos River K-T boundary, TX): Danian, Texas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Cerithiidae
Bittium estellense
1 specimen
Gastropoda - Neogastropoda - Fasciolariidae
Anomalofusus sp. Wade 1916
2 specimens
A. substriata or subnodosus
Gastropoda - Neogastropoda - Turridae
Turridae indet. Swainson 1840
1 specimen
T. r
Gastropoda - Naticidae
Naticidae indet. Guilding 1834
31 specimens
Gastropoda - Procerithiidae
Nudivagus sp.
1 specimen
N. sp. a
Gastropoda - Heterostropha - Gordenellidae
Promathilda cf. parvilis
3 specimens
original and current combination Promathildia
Bivalvia - Arcida - Cucullaeidae
Cucullaea macrodonta
11 specimens
Bivalvia - Pectinida - Propeamussiidae
Amusium alabamense (Aldrich 1886)
2 specimens
Bivalvia - Cardiida - Cardiidae
Cardiidae indet. Lamarck 1809
8 specimens
Bivalvia - Nuculanida - Nuculanidae
Nuculana sp. Link 1807
42 specimens
N. sp. b
Pisces
Pisces indet. Linnaeus 1758
39 specimens
synonym of Osteichthyes
fish parts
see common names

Geography
Country:United States State/province:Texas County:Falls
Coordinates: 31.3° North, 97.0° West (view map)
Paleocoordinates:36.1° North, 77.4° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period:Paleogene Epoch:Paleocene
Stage:Danian 10 m.y. bin:Cenozoic 1
*Period:Tertiary
Key time interval:Danian Zone: C. primus
Age range of interval:66.00000 - 61.60000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Local order:bottom to top
Stratigraphy comments: composite section from CM-4 and Brazos-1, in foram zone P1b
Lithology and environment
Primary lithology:bioturbation unlithified silty claystone
Includes fossils?Y
Lithology description: homogenized (from bioturbation) silty claystone with sparse fossils (hansen et al. 1987)
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Collection excludes:all microfossils,some macrofossils,difficult macrofossils
Collection methods:bulk,mechanical,field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:5583
Authorizer:A. Miller Enterer:K. Layou
Modifier:J. Sessa Research group:GCP,marine invertebrate
Created:1999-10-18 11:47:55 Last modified:2010-07-24 15:34:29
Access level:the public Released:1999-10-18 11:47:55
Creative Commons license:CC BY
Reference information

Primary reference:

333. T. A. Hansen, B. Upshaw, E. G. Kauffman and W. Gose. 1993. Patterns of molluscan extinction and recovery across the Cretaceous-Tertiary boundary in east Texas; report on new outcrops. Cretaceous Research 14:685-706 [A. Miller/K. Layou/M. Uhen]

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]