FGS L-139 (Bed 4) - Withlacoochee River [Inglis Limestone] (Eocene of the United States)

Where: Levy County, Florida (29.0° N, 82.6° W: paleocoordinates 29.1° N, 75.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Inglis Limestone Formation (Ocala Group), Priabonian (38.0 - 33.9 Ma)

• STRATIGRAPHIC RELATIONS: From the Inglis Fm of the Ocala Group, which is overlain by the Williston Limestone, and overlies the Avon Park Limestone; originally proposed as Inglis Member of Moodys Branch Fm by Vernon (1951). AGE: Priabonian; Moodys Branch=Bartonian (JAS 14 October 2010); emended to Priabonian as no longer placed in Moodys Branch Fm (AJWH 15 August 2014). STRATIGRAPHIC POSITION: fossils are from Bed 4 of section described by Vernon (1951) (FGS Bulletin 33).

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, fine-grained dolomite and lithified, concretionary, dolomitic, brown, gray limestone

• tan, soft, finely crystalline, massive dolomite containing pebbles of laminated dolomite and abundant nodular concretions of hard, brown to gray, crystalline, dolomitic limestone

Size class: macrofossils

Preservation: replaced with dolomite

Reposited in the FLMNH

Collection methods: surface (float), surface (in situ),

• COLLECTOR: Unknown. REPOSITORY: Formerly at Florida Geological Survey; likely now at Florida Museum of Natural History (FLMNH).

Primary reference: H. G. Richards and K.V.W. Palmer. 1953. Eocene Mollusks from Citrus and Levy Counties, Florida. Florida Geological Survey Geological Bulletin (35) [A. Miller/K. Layou/K. Layou]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41475: authorized by Arnold Miller, entered by Karen Layou on 15.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Foraminifera
 Orbitolinacea - Orbitolinidae
 Textulariacea - Valvulinidae
Lituonella sp. Schlumberger and Douvillé 1905
Tubothalamea
 Miliolida - Miliolidae
Miliolidae indet. Ehrenberg 1839
 Miliolida - Peneroplidae
Echinoidea
 Clypeasteroida - Protoscutellidae
Periarchus lyelli Conrad 1834 sand dollar
Periarchus lyelli floridanus
 Cassiduloida - Cassidulidae
 Spatangoida - Brissidae
Eupatagus mooreanus Pilsbry 1914 heart urchin
Gastropoda
 Architaenioglossa - Ampullinidae
Ampullinopsis citrinensis, "Pseudocrommium brucei" = Pachycrommium
"Pseudocrommium brucei" = Pachycrommium snail
 Cerithioidea - Diastomatidae
Diastoma sp. Deshayes 1850 snail
Bivalvia
 Cardiida - Psammobiidae
 Lucinida - Lucinidae
Fimbria vernoni Richards 1953 clam
 Carditida - Carditidae
 Arcida - Glycymerididae
Glycymeris lisbonensis Harris 1919 clam