Crystal River Rock Co. Quarry - Bed 12 (Suwannee Lmst): Early Oligocene, Florida

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Lepidocyclinidae
Lepidocyclina sp.
Echinoidea - Cassiduloida - Cassidulidae
Cassidulus gouldii (Bouve 1846)
Gastropoda - Turritellidae
Turritella martinensis
Turritella vicksburgensis
Bivalvia - Cardiida - Veneridae
Chione cf. bainbridgensis Dall 1916
see common names

Geography
Country:United States State/province:Florida County:Citrus
Coordinates: 28.9° North, 82.6° West (view map)
Paleocoordinates:28.9° North, 76.3° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Paleogene Epoch: Oligocene
Stage: Rupelian 10 m.y. bin: Cenozoic 4
Key time interval: Early Oligocene
Age range of interval: 33.9 - 27.82 m.y. ago
Stratigraphy
Geological group:Vicksburg Formation:Suwannee Limestone
Local section:Crystal River Rock Co. quarry Local bed:114 ft
Local order:bottom to top
Regional section:Citrus
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC SOUCE: Individual bed (12) within measured section. STRATIGRAPHIC RELATIONS: Suwannee Lmst was erected by Cpple amd Mansfield (1936) for exposures of hard limestone in local region and locally overlies the Crystal River Fm. AGE: Early Oligocene (Rupelian). SPECIFIC STRATIGRAPHY: 1 ft thick limestone in upper portion of 131 ft section, 17 ft below top of section.
Lithology and environment
Primary lithology:concretionary,brown,yellow lithified "limestone"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Cream to tan, hard, crystalline, nodular, porous limestone with seams of limestone, amd containing many poorly preserved molds.
Environment:carbonate indet.
Geology comments: GENERAL ENVIRONMENT: Environment not specified, but carbonate facies.
Taphonomy
Modes of preservation:cast,mold/impression
Size of fossils:macrofossils
Preservation of anatomical detail:poor
Collection methods and comments
Collection methods:selective quarrying,field collection
Reason for describing collection:general faunal/floral analysis
Collection method comments: SOURCE: Based on field collecting. REPOSITORIES: Unknown repository for molluscs, echinoids and foraminifera, presumably Florida Geological Survey.
Taxonomic list comments:SOURCE: Vernon (1951) for all taxa. COVERAGE: Probably limited for all groups due to poor preservation. NOMENCLATURE: Slightly antiquated for molluscs and echinoids.
Metadata
Database number:61122
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2006-05-29 22:22:24 Last modified:2013-11-25 13:37:23
Access level:the public Released:2006-05-29 22:22:24
Creative Commons license:CC BY
Reference information

Primary reference:
17557. 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]