Where: Lowndes County, Alabama (32.1° N, 86.8° W: paleocoordinates 35.3° N, 64.9° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Prairie Bluff Formation (Selma Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• At Braggs the Prairie Bluff Formation unconformably overlies the fossiliferous Ripley Formateion. The Clayton Formation disconformably overlies the Prairie Bluff Formation.
• group of beds-level stratigraphic resolution
Environment/lithology: shallow subtidal; unlithified, silty, sandy limestone
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.
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 83237: authorized by Arnold Miller, entered by Jocelyn Sessa on 12.08.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Gastropoda | |
| |
Weeksia deplanata snail | |
Laxispira monilifera Sohl 1964 turret shell
Turritella hilgardi turret shell
Turritella ? trilira Conrad 1860 turret shell
Haustator bilira Stephenson 1941 turret shell | |
? Bellifusus sp. Stephenson 1941 snail | |
Napulus sp. Stephenson 1941 snail | |
Paladmete cancellaria Conrad 1858 snail | |
Amaurellina sp. Fischer 1885 moon snail
Euspira rectilabrum Conrad 1858 moon snail
Gyrodes sp. Conrad 1860 moon snail | |
Acteon sp. Montfort 1810 snail | |
Bivalvia | |
Nemodon eufaulensis clam | |
Arca sp. Linnaeus 1758 ark | |
| |
Anomia ornata Gabb 1876 jingle | |
| |
cf. Isognomon carolinensis oyster | |
Gryphaeostrea vomer, "Exogyra costata" = Exogyra (Exogyra) costata
Gryphaeostrea vomer Morton 1828 oyster
"Exogyra costata" = Exogyra (Exogyra) costata Say 1820 oyster | |
? Rastellum falcata oyster | |
Crenella senica clam | |
Lithophaga sp. Röding 1798 mussel | |
Cuspidaria sp. Dall 1886 clam | |
Liopistha protexta Conrad 1853 clam | |
Pholadomya tippana clam | |
"Caesticorbula crassaplica" = Caestocorbula crassiplica, Corbula monmouthensis
"Caesticorbula crassaplica" = Caestocorbula crassiplica Gabb 1860 clam Caesticorbula Caesticorbula crassaplica
Corbula monmouthensis Gardner 1916 clam | |
Veniella conradi Morton 1833 clam | |
Cymbophora berryi clam | |
Trachycardium efaulense cockle | |
"Linearia metastriata" = Linearis, Aenona eufalensis
"Linearia metastriata" = Linearis tellin clam
Aenona eufalensis tellin clam | |
Panopea sp. Menard 1807 clam | |
Crassatella vadosa Morton 1834 clam | |
Scabrotrigonia eufaulensis Gabb 1860 clam | |
Nucula sp. Lamarck 1799 nut clam | |
Polychaeta | |
Hamulus onyx Morton 1834 |