Sarasota Mbr, Murdock Station Fm (Pliocene of the United States)

Where: Florida (25.9° N, 81.3° W: paleocoordinates 26.0° N, 80.5° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Sarasota Member (Murdock Station Formation), Early/Lower Pliocene (5.3 - 3.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Sarasota Mbr of the Murdock Station Fm, Hawthorn Grp, which is overlies the Jupiter Waterway Mbr of the Murdock Station Fm and is overlain by the Tamiami or Fort Thompson Fms. Correlative with the Yorktown, Goose Neck, and Duplin Fms. THICKNESS: Varies between 1 and 5 m across areal extent. AGE: Early Pliocene. Based on macrofossil biostratigraphy the unit is throught to represent the latest Zanclean. STRATIGRAPHIC POSITION: Checklist representative of entire member.

• member-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; unlithified, pebbly, phosphatic, shelly/skeletal, brown, yellow, sandy, calcareous claystone

• ENVIRONMENT: carbonate lagoonal/restricted shallow subtidal environment; intertidal mudflats and shallow lagoons.
• SPECIFIC LITHOLOGY: Yellow-tan calcarenous clay, containing phosphoritic pebbles and granules, and abundant bone fragments; also including sandy clay, and arenaceous calcilutite. LITHIFICATION: Unlithified, based on figured specimens.

Size class: macrofossils

Collection methods: COLLECTOR: Unknown, presumably the authors and others. REPOSITORY: No repository stated.

Primary reference: E. J. Petuch and C. E. Roberts. 2007. The geology of the Everglades and adjacent areas 1-212 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 79962: authorized by Austin Hendy, entered by Austin Hendy on 29.03.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Includes only the more abundant and indicative species of gastropoda and bivalvia. NOMENCLATURE: Modern nomenclature, with subgenus and species-resolution assignments.
unclassified
  -
Gastropoda
 Neogastropoda - Muricidae
Ecphora quadricostata Conrad 1830 murex snail
Bivalvia
 Pholadomyida - Margaritariidae
Margaritaria abrupta Conrad 1832 clam
 Cardiida - Ungulinidae
Diplodonta subvexa Conrad 1838 clam
 Cardiida - Mactridae
Mulinia congesta Conrad 1833 clam
 Pectinida - Pectinoidae
Chesapecten jeffersonius Say 1824 scallop
 Pectinida - Anomiidae
Lingulata
 Discinida - Disciniidae
Thecostraca
 Balanomorpha - Balanidae
"Concavus glyptopoma" = Arossia glyptopoma Pilsbry 1916 barnacle
"Concavus tamiamiensis" = Chesaconcavus tamiamiensis Ross 1965 barnacle
Anthozoa
 Scleractinia - Rhizangiidae
Septastrea crassa Holmes 1860 stony coral
Astrangia lineata stony coral