Braggs-Pine Barren-10-11 (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; poorly lithified, glauconitic, silty limestone and unlithified, glauconitic sandstone

• Beds 10 & 11 Consists of alternating indurated and unconsolidated sandy calcareous silts and limestones approximately 1m thick. Bed 10 is unconsolidated glaucanitic sandy silt. Bed 11 is slightly lithified calcareous glaucanitic 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 83292: authorized by Arnold Miller, entered by Jocelyn Sessa on 15.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Malacostraca
 Decapoda -
"Thalassinoidea indet." = Thalassinidea
"Thalassinoidea indet." = Thalassinidea Latreille 1831 decapod
Bivalvia
 Ostreida - Gryphaeidae
Gryphaeostrea vomer Morton 1828 oyster
 Ostreida - Ostreidae
Ostrea crenulimarginata Gabb 1860 oyster
 Carditida - Carditidae
Venericardia sp. Lamarck 1801 clam
Stenolaemata
 Cyclostomata - Cerioporidae
Gymnolaemata
 Cheilostomata - Antroporidae