ammonites
Toledo Bend Core Microfossils Danville Formation (Eocene of the United States)

Where: Sabine/Newton County, Louisiana/Texas (31.2° N, 93.6° W: paleocoordinates 32.0° N, 85.8° W)

• coordinate estimated from map

When: Danville Landing Member, Late/Upper Eocene (37.2 - 33.9 Ma)

• upper Jacksonian

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; concretionary, gypsiferous, yellow, blue, argillaceous, silty, calcareous claystone

• inner sublittoral zone of a nearshore open-marine environment. The large number of species present and the large number of specimens per unit volume of sediment inidicate favorable living conditiona and a slow rate of deposition. Wilbert (1953) presents a map showing the maximum advance of the Jacksonian sea
• "blue to yellow, calcareous, gypsiferous, fossiliferous, argillaceous, concretionary clay and mudstone."

•

•"data assembled from surface sections and shallow borings indicates a thickness of at least 100ft."

Size classes: macrofossils, microfossils

Preservation: replaced with pyrite

Collection methods: core, sieve,

Primary reference: D. R. Anderson. 1965. Biostratigraphy of the Vicksburgian Equivalent at Toledo Bend Dam Site, Louisiana and Texas. Transactions of The Gulf Coast Association of Geological Societies 15:61-71 [L. Ivany/P. Wall/P. Wall] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 45017: authorized by Linda Ivany, entered by Patrick Wall on 28.09.2004