Braggs-Upper Prairie Bluff (Cretaceous of the United States)

Where: Lowndes County, Alabama (32.1° N, 86.8° W: paleocoordinates 35.3° N, 64.9° W)

• coordinate stated in text

• small collection-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

• An impure silty to sandy chalk with subordinate amounts of clay, sand and chalky limestone is approximately 30m thick.

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 83238: authorized by Arnold Miller, entered by Jocelyn Sessa on 12.08.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• Faunal lists were supplemented by a US Geological Survey Open File Report (Sohl and Koch 1983). Most of the species listed from Ripley, Lower and Middle Prairie Bluff were taken from the Open File Report.
unclassified
  -
Malacostraca
 Decapoda - Callianassidae
cf. Callianassa mortoni Pilsbry 1901 decapod
 Decapoda - Oziidae
Menippe sp. De Haan 1833 crab
 Decapoda - Xanthidae
Xanthidae "sp. B" MacLeay 1838 stone crab
Xanthidae "sp. A" MacLeay 1838 stone crab
 Decapoda - Dakoticancridae
Avitelmessus grapsoideus Rathbun 1923 crab
Polychaeta
 Sabellida - Serpulidae
Serpula ? adnata Wade 1926
 Serpulimorpha -
Bivalvia
 Arcida - Arcidae
 Arcida - Parallelodontidae
Nemodon sp. Conrad 1869 clam
 Arcida - Cucullaeidae
"Cucullaea capax" = Idonearca capax
"Cucullaea capax" = Idonearca capax Conrad 1858 clam
Cucullaea Idonearca capax
 Pectinida - Pectinoidae
Camptonectes bubonis Stephenson 1941 scallop
Camptonectes Camptonectes bubonis
 Pectinida - Limidae
 Pectinida - Plicatulidae
Plicatula sp. Lamarck 1801 scallop
 Pectinida - Anomiidae
Anomia argentaria Morton 1833 jingle
Anomia Anomia argentaria
 Ostreida - Gryphaeidae
Exogyra costata Say 1971 oyster
Gryphaeostrea vomer Morton 1828 oyster
 Ostreida - Arctostreidae
 Ostreida - Pinnidae
Pinna sp. Linnaeus 1758 oyster
Pinna laqueata Conrad 1858 oyster
Pinna Pinna laqueata
 Mytilida - Mytilidae
Lithophaga sp. Röding 1798 mussel
 Carditida - Crassatellidae
? Crassatellidae indet. Férussac 1822 clam
Crassatella vadosa Morton 1834 clam
 Pholadida - Corbulidae
"Caesticorbula crassaplica" = Caestocorbula crassiplica
"Caesticorbula crassaplica" = Caestocorbula crassiplica Gabb 1860 clam
Caesticorbula Caesticorbula crassaplica
 Pholadida - Pholadidae
Martesia sp. Sowerby 1824 clam
Opertochasma sp. Stephenson 1953 clam
 Cardiida - Arcticidae
Etea carolinensis Conrad 1875 clam
Veniella conradi Morton 1833 clam
 Cardiida - Mactridae
Cymbophora sp. Gabb 1869 clam
 Cardiida - Veneridae
Cyclorisma parva venus clam
Legumen ellipticum venus clam
Aphrodina tippana venus clam
Cyprimeria alta venus clam
 Cardiida - Icanotiidae
? Icanotia sp. Stoliczka 1870 clam
 Cardiida - Tellinidae
? Solyma sp., "Linearia metastriata" = Linearis, Tellina munda
? Solyma sp. Conrad 1870 tellin clam
"Linearia metastriata" = Linearis tellin clam
Tellina munda tellin clam
 Cardiida - Cardiidae
Protocardia sp. Beyrich 1845 cockle
Protocardia ? Brevicardium sp.
Granocardium lowei cockle
Granocardium Granocardium lowei
 Solenida - Pharidae
 Pandorida - Laternulidae
 Poromyida - Poromyidae
Liopistha protexta Conrad 1853 clam
 Pholadomyida - Pholadomyidae
 Lucinida - Lucinidae
? Lucina sp. Bruguière 1797 clam
 Myoida -
 Trigoniida - Megatrigonioidae
 Nuculida - Nuculidae
Nucula sp. Lamarck 1799 nut clam
 Protobranchia - Nuculanidae
Nuculana whitfieldi pointed nut clam
Nuculana corbetensis pointed nut clam
Gastropoda
 Cephalaspidea - Cylichnidae
Cylichna sp. Lovén 1846 snail
 Neogastropoda - Buccinidae
? Stantonella sp. Wade 1926 true whelk
Buccinopsis sp. Conrad 1857 true whelk
 Neogastropoda - Fasciolariidae
Anomalofusus sp. Wade 1916 snail
? Remera sp. Stephenson 1941 snail
? Bellifusus sp. Stephenson 1941 snail
 Neogastropoda - Paladmetidae
Paladmete cancellaria Conrad 1858 snail
 Neogastropoda - Volutidae
Longoconcha ? dalli Stephenson 1941 volute
 Neogastropoda - Tudiclidae
Pyropsis sp. Conrad 1860 snail
 Neogastropoda - Turbinellidae
Napulus sp. Stephenson 1941 snail
 Neogastropoda - Muricidae
"Lowenstamia cucullata" = Sohliina cucullata
"Lowenstamia cucullata" = Sohliina cucullata Sohl 1964 murex snail
 Stromboidea - Aporrhaidae
 Naticoidea - Naticidae
Euspira rectilabrum Conrad 1858 moon snail
Gyrodes sp. Conrad 1860 moon snail
 Sorbeoconcha - Turritellidae
Laxispira monilifera Sohl 1964 turret shell
Turritella tippana turret shell
Turritella vertebroides Morton 1834 turret shell
Turritella ? trilira Conrad 1860 turret shell
Haustator bilira turret shell
 Tectibranchia - Scaphandridae
Ellipsoscapha ? mortoni Forbes 1845 snail
Scaphopoda
 Dentaliida - Dentaliidae
Cephalopoda
 Ammonitida - Sphenodiscidae
? Sphenodiscus pleurisepta Conrad 1857 ammonite
 Ammonitida - Scaphitidae
Discoscaphites sp. Meek 1870 ammonite
 Ammonitida - Baculitidae
"Baculites carinatus" = Eubaculites carinatus, Baculites sp.
"Baculites carinatus" = Eubaculites carinatus Morton 1834 ammonite
Baculites sp. Lamarck 1799 ammonite
Gymnolaemata
 Cheilostomata - Bitectiporidae
? Hippoporina sp. Neviani 1895
 Cheilostomata -
 Cheilostomata - Antroporidae
Stenolaemata
 Cyclostomata - Cerioporidae
 Cyclostomata -
Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin
Spatangoid echiniod
Anthozoa
 Scleractinia - Micrabaciidae
Brachydontes
  -
? Brachydontes sp. Swainson 1840