Also known as M525

Where: Georgetown County, South Carolina (33.6° N, 79.4° W: paleocoordinates 34.9° N, 59.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Browns Ferry Member (Rhems Formation), Danian (66.0 - 61.6 Ma)

• STRATIGRAPHIC RELATIONS: From the "Black Mingo Fm" [now group status], revised by Sanders (1998). AGE: Sanders (1998) regards the "Black Mingo Fm" of Cooke (1936), and used informally by Reeside (1924), as Early and Late Paleocene (comprising upper and lower members). Reeside (1924) regarded the unit as Eocene, but noted that the range of the beds might be either Midway or Wilcox. Nautiloid came from Sloan's (1908) Lower Black Mingo, now assigned to the Rhems Formation (Van Nieuwenhuise & Colquhoun, 1982), from the Browns Ferry Member according to the stratigraphic sections in Cooke (1936). There are considerable lateral thickness variations between the two members at this location, according to Van Nieuwenhuise & Colquhoun, 1982. STRATIGRAPHIC POSITION: From lower part of 7 foot-thick unit, about 8 feet above the Cretaceous.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, sandy, cherty/siliceous mudstone

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Sloan; reposited in the USNM

• COLLECTOR: E. Sloan, c. 1910's. REPOSITORY: U.S.N.M.

Primary reference: J. B. Reeside. 1924. A new nautiloid cephalopod, Eutrephoceras sloani, from the Eocene of South Carolina. Proceedings of the United States National Museum 65(5):79520-79524 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 81239: authorized by Austin Hendy, entered by Austin Hendy on 11.06.2008

Creative Commons license: CC BY (attribution)