Crystal River Rock Co. Quarry - Bed 5 (Crystal River Limestone) (Eocene of the United States)

Where: Citrus County, Florida (28.9° N, 82.6° W: paleocoordinates 29.0° N, 75.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Crystal River Limestone Formation (Ocala Group), Late/Upper Eocene (37.2 - 33.9 Ma)

• STRATIGRAPHIC SOUCE: Individual bed (5) within measured section. STRATIGRAPHIC RELATIONS: Proposed for 108 ft of limestone exposed in Crystal River Rock Co., quarry. Includes all calcareous deposits of Late Eocene age, lying stratigraphically between the Williston Fm and the Oligocene limestones. The Crystal River Fm is synonomous with the "Ocala Limestone (restricted definition)". SPECIFIC STRATIGRAPHY: 43.25 ft thick coquina in middle portion of 131 ft section, 2 ft below unconformity and overlying Suwannee Lmst.

• bed-level stratigraphic resolution

Environment/lithology: poorly lithified, concretionary, shelly/skeletal, white, yellow limestone

• GENERAL ENVIRONMENT: Environment not specified, but carbonate facies.
• SPECIFIC LITHOLOGY: Cream to white limestone, massive, bedded, pasty, soft coquina composed of molluscs and containing crystalline nodular concretions.

Size class: macrofossils

Collection methods: quarrying,

• SOURCE: Based on field collecting. REPOSITORIES: Unknown repository for molluscs, echinoids and foraminifera, presumably Florida Geological Survey.

Primary reference: H. S. Puri and R.O. Vernon. 1964. Summary of the geology of Florida and a guidebook to the classic exposures. Florida Geological Survey Special Publication 5 [A. Miller/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 61116: authorized by Austin Hendy, entered by Austin Hendy on 29.05.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• SOURCE: Vernon (1951) for all taxa. COVERAGE: Probably limited for all groups due to poor preservation. NOMENCLATURE: Slightly antiquated for molluscs and echinoids.
Globothalamea
 Rotaliida - Discorbidae
 Loftusiida - Acervulinidae
Foraminifera
 Nummulitacea - Nummulitidae
"Operculinoides ocalina" = Nummulites
"Operculinoides ocalina" = Nummulites
 Orbitoidacea - Lepidocyclinidae
Anthozoa
  -
Anthozoa indet. Ehrenberg 1834
Gastropoda
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell
Bivalvia
 Pectinida - Pectinoidae
Pecten sp. Müller 1776 scallop