ammonites
Ballast Point, Silex Bed [Tampa Limestone] (Oligocene to of the United States)

Where: Hillsborough County, Florida (27.9° N, 82.5° W: paleocoordinates 28.1° N, 77.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tampa Limestone Member (Arcadia Formation), Chattian to Chattian (28.4 - 20.4 Ma)

• LITHOSTRATIGRAPHY: Formerly referred to as the Tampa Limestone. Scott et al. (2001) assign the Tampa to the rank of member and place it in the Arcadia Formation. AGE: Mansfield suggests age equivalencies (based primarily on faunal similarities) with the Chipola Fm., the Trent Marl of North Carolina, and the Anguilla Fm. of Anguilla. Placed here into the Chattian-Aquitanian on the basis of most recent chronostratigraphy. STRATIGRAPHIC POSITION: "Silex Beds" near top of Tampa Limestone

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; limestone

• light gray to white or yellow limestone, admixed with marl, a little sand, and much green clay

Size class: macrofossils

Preservation: cast

Primary reference: N. E. Weisbord. 1973. New and little-known corals from the Tampa Formation of Florida. Bulletin State of Florida Department of Natural Resources Division of Interior Resources Bureau of Geology 56:1-146 [W. Kiessling/U. Merkel] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92509: authorized by Wolfgang Kiessling, entered by Uta Merkel on 17.11.2009

Creative Commons license: CC BY (attribution)