Charlotte Harbor area [Tamiami Fm] (Pliocene of the United States)

Where: Charlotte County, Florida (26.9° N, 82.0° W: paleocoordinates 27.0° N, 81.3° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Tamiami Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• LITHOSTRATIGRAPHIC RELATIONSHIPS: From the Tamiami Formation, which unconformably underlies the Pinecrest Beds (=Pincrest Fm), and is correlative to the Choctawatchee Fm (=Jackson Bluff Fm) in Northern Florida and Yorktown Fm of North Carolina and Virginia. AGE: Miocene according to DuBar (1962), but assigned here to an Early Pliocene age on the basis of more recent publications. STRATIGRAPHIC POSITION: From unknown position within formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; unlithified, phosphatic, yellow, argillaceous marl and unlithified, phosphatic, gray claystone

• Fine grained clastics such as clays and argillaceous limestones of the Tamiami are considered brackish water lagoon or bay deposits. Along Alligator Creek and in pits in Acline, the formation is represented by a phosphatic quartz sand containing many specimens large barnacles and sand dollars, which is considered a shallow water, nearshore environment, possibly a submerged sandbar.
• Along Shell Creek: argillaceous marls and calcareous clays; all beds are slightly to moderated consolidated, phosphatic, cream to yellowish in color and sparsely fossiliferous. Along Alligator Creek: clays, marls, sands, and a few thin limestones; most of the units, except the limestones, are only slightly consolidated, and nearly all are at least slightly phosphatic; colors range from gray through tan, cream and buff; sands, in general, are most common to the east with calcareous clays, limestones, and marls predominant in the west

Size class: macrofossils

Preservation: mold/impression

Collection methods: bulk,

Primary reference: J. R. DuBar. 1962. Neogene Biostratigraphy of the Charlotte Harbor Area in Southwestern Florida. Florida Geological Survey Geological Bulletin 43 1-83 [A. Miller/K. Layou/K. Layou]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 41496: authorized by Arnold Miller, entered by Karen Layou on 15.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• represents a composite list for the Tamiami Formation in the Charlotte Harbor area
Maxillopoda
 Sessilia - Balanidae
"Balanus concavus" = Concavus concavus
"Balanus concavus" = Concavus concavus Bronn 1831 barnacle
Bivalvia
 Pectinida - Pectinoidae
 Pectinida - Anomiidae
Anomia simplex d'Orbigny 1845 jingle
 Ostreida - Ostreidae
 Cardiida - Veneridae
Mercenaria campechiensis Gmelin 1791 quahog
Gastropoda
 Sorbeoconcha - Turritellidae
Turritella pontoni turret shell
Turritella "sp. a" Lamarck 1799 turret shell
Echinoidea
 Clypeasteroida - Mellitidae
Encope macrophora sand dollar
E. macrophora tamiamiensis