Where: Leon County, Florida (30.4° N, 84.6° W: paleocoordinates 30.5° N, 83.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Jackson Bluff Formation (Alum Bluff Group), Late/Upper Pliocene (3.6 - 2.6 Ma)
• Lower upper Miocene bed. Ecphora Zone of Choctawhatchee Formation, Alum Bluff Group. The Ecphora zone, from which the collection is derived, is typically exposed in the upper fossiliferous bed unconformably overlying the Chipola Formation at Alum Bluff, Apachicola River. The bed ranges in thickness from 15-25 ft at different places along the bluff. Late Miocene age based on recent lithostratigraphy. Local section name = Harveys Creek, Basinal/regional section name = Leon. Placed in Jackson Bluff Fm (and hence Late Pliocene) by enterer.
• group of beds-level stratigraphic resolution
Environment/lithology: coastal; unlithified, shelly/skeletal, blue, sandy claystone
Size class: macrofossils
Reposited in the USNM
• Specimens are lodged in USNM collections. Collected by W.C. Mansfield (1925)
Primary reference: W. C. Mansfield. 1930. Miocene gastropods and scaphopods of the Choctawatchee Formation of Florida. Florida State Geological Survey Bulletin 3 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 59488: authorized by Austin Hendy, entered by Austin Hendy on 03.04.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Dentalium (Dentalium) carolinense tusk shell | |
Bivalvia | |
"Phacoides (Parvilucina) crenulatus" = Parvilucina crenulata
"Phacoides (Parvilucina) crenulatus" = Parvilucina crenulata Conrad 1840 clam | |
Mulinia congesta Conrad 1833 clam | |
Crassatellites (Crassatellites) meridionalis Mansfield 1929 clam | |
Ostrea disparilis oyster | |
Gastropoda | |
"Fusinus dalli" = Heilprinia dalli, Peristernia filicata
"Fusinus dalli" = Heilprinia dalli Mansfield 1930 snail
Peristernia filicata snail | |
Turritella etiwanensis turret shell |