Braggs-Pine Barren-Beds 12-13 (Paleocene of the United States)

Where: Lowndes County, Alabama (32.1° N, 86.8° W: paleocoordinates 34.9° N, 66.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Pine Barren Member (Clayton Formation), Danian (66.0 - 61.6 Ma)

• The Clayton Formation disconformably overlies the Prairie Bluff Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, silty, sandy limestone and unlithified, silty, sandy sandstone

• 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.

Size class: mesofossils

Collection methods: bulk, surface (in situ),

• 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.

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 83293: authorized by Arnold Miller, entered by Jocelyn Sessa on 15.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

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Anthozoa
 Scleractinia - Caryophylliidae
? Trochocyathus sp.
? Trochocyathus sp. Milne-Edwards and Haime 1848 stony coral
Gymnolaemata
 Cheilostomata - Antroporidae
? Antropora sp.
? Antropora sp. Norman 1903
Stenolaemata
 Cyclostomata - Cerioporidae
Ceriopora vesiculosa
 Cyclostomata - Tubuliporidae
Pleuronea "sp. B", Pleuronea alveolata
Pleuronea "sp. B" Canu and Bassler 1920
 Cyclostomata - Entalophoridae
Entalophora sp.
Entalophora sp. Lamoureux 1821
Bivalvia
 Carditida - Carditidae
Venericardia sp.
Venericardia sp. Lamarck 1801 clam
 Ostreida - Gryphaeidae
Gryphaeostrea vomer
Gryphaeostrea vomer Morton 1828 oyster
 Ostreida - Ostreidae
Ostrea crenulimarginata
Ostrea crenulimarginata Gabb 1860 oyster