Where: Walton County, Florida (30.7° N, 86.1° W: paleocoordinates 31.0° N, 83.4° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Shoal River Formation (Alum Bluff Group), Serravallian (13.8 - 11.6 Ma)
• STRATIGRAPHIC RELATIONS: From the Shoal River Fm of the Alum Bluff, which lies between the Chipola Fm (Early Miocene) and the Chochtawatchee Fm [Early Pliocene). AGE: Early Miocene (Gardener 1947); Middle Miocene in Vokes (1990) and Portell et al. (2006), although Jones et al. (1993) reports 87Sr/86Sr ratios that yielded average age estimates of 12.4 Ma [=Serravalian]. STRATIGRAPHIC POSITION: From unknown position within formation.
• bed-level stratigraphic resolution
Environment/lithology: marine; unlithified, calcareous marl and unlithified, calcareous sandstone
Size class: macrofossils
Reposited in the USGS
Primary reference: J. R. Gardner. 1947. The Molluscan Fauna of the Alum Bluff Group of Florida. United States Geological Survey Professional Paper (142A-H)1-709 [A. Miller/K. Layou/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 42888: authorized by Arnold Miller, entered by Karen Layou on 06.08.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
"Polinices (Neverita) eucallosus" = Neverita, "Polinices (Neverita) chipolanus" = Neverita chipolanus, "Natica (Tectonatica) semen" = Tectonatica
| |
| |
Bivalvia | |
"Arca (Diluvarca) waltonia" = Anadara (Diluvarca)
| |
"Phacoides (Parvilucina) vaughani" = Parvilucina
| |
"Corbula (Caryocorbula) whitfieldi" = Cuneocorbula whitfieldi, Corbula (Caryocorbula) seminella, "Corbula waltonensis" = Varicorbula disparilis
| |
| |
"Spisula (Hemimactra) craspedota" = Spisula craspedota
| |
| |
| |
"Crassatellites (Crassinella) tanicus" = Crassinella
| |
|