Braggs-Pine Barren-Beds 12-13: Danian, Alabama

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Carditida - Carditidae
Venericardia sp. Lamarck 1801
Bivalvia - Ostreida - Gryphaeidae
Gryphaeostrea vomer (Morton 1828)
Bivalvia - Ostreida - Ostreidae
Ostrea crenulimarginata Gabb 1860
Gymnolaemata - Cheilostomata - Antroporidae
? Antropora sp. Norman 1903
Stenolaemata - Cyclostomata - Cerioporidae
Ceriopora vesiculosa
Stenolaemata - Cyclostomata - Entalophoridae
Entalophora sp. Lamoureux 1821
Stenolaemata - Cyclostomata - Tubuliporidae
Pleuronea alveolata
Pleuronea informal sp. B Canu and Bassler 1920
Anthozoa - Scleractinia - Caryophylliidae
? Trochocyathus sp. Milne-Edwards and Haime 1848
see common names

Geography
Country:United States State/province:Alabama County:Lowndes
Coordinates: 32.1° North, 86.8° West (view map)
Paleocoordinates:34.9° North, 66.8° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Paleocene
Stage:Danian 10 m.y. bin:Cenozoic 1
Key time interval:Danian
Age range of interval:66.00000 - 61.60000 m.y. ago
Stratigraphy
Geological group:Midway Formation:Clayton Member:Pine Barren
Stratigraphic resolution:group of beds
Stratigraphy comments: The Clayton Formation disconformably overlies the Prairie Bluff Formation.
Lithology and environment
Primary lithology: lithified silty,sandy "limestone"
Secondary lithology: unlithified silty,sandy sandstone
Lithology description: Beds 12-13 Consists of alternating indurated and unconsolidated sandy calcareous silts and limestones and are approximately 2 m thick. Bed 12 is unlithified sandy silt. Bed 13 id lithified silty limestone. At Braggs there are numerous lithologies including limestones, marls, coarse transgressive lags and glauconitic sands.
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Collection methods:bulk,surface (in situ),field collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: Some areas were sampled on the outcrop surface, others were excavated with pick and shovel and some more specimens came from screenwashing bulk sediments. Collection efforts were focused on the basal Clayton Formation.
Metadata
Database number:83293
Authorizer:A. Miller Enterer:J. Sessa
Modifier:L. Eccles Research group:GCP,marine invertebrate
Created:2008-08-15 05:41:39 Last modified:2010-10-04 08:55:32
Access level:the public Released:2008-08-15 05:41:39
Creative Commons license:CC BY
Reference information

Primary reference:
27936. J. R. Bryan and D. S. Jones. 1989. Fabric of the Cretaceous-Tertiary Marine Macrofaunal Transition at Braggs, Alabama. Palaeogeography, Palaeoclimatology, Palaeoecology 69:279-301 [A. Miller/J. Sessa]