USGS 30020, below Shepperd Hall (Eocene of Jamaica)

Where: Jamaica (18.4° N, 77.8° W: paleocoordinates 16.9° N, 77.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Chapelton Formation (Yellow Limestone Group), Lutetian (47.8 - 41.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified limestone

• Regional paleogeography interpreted as shelf edge (as opposed to lagoonal) by Donovan et al. (2007). Chapelton Formation described as inner ramp by Gold et al. (2019). Shallow photic environment consistent with Entobia borings, which most probably occurred post-mortem and within the photic zone. The concentration of borings ventrally may indicate this was the upper surface of the floating shell following death or, perhaps less likely, after settling.

Size class: macrofossils

Preservation: mold/impression

Collected by N.F. Sohl; reposited in the USNM

Collection methods: surface (float)

Primary reference: S. K. Donovan and G. Draper. 2001. Further fossil cephalopods from Jamaica. Paläontologische Zeitschrift 75:17-21 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 167483: authorized by Matthew Clapham, entered by Matthew Clapham on 18.03.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Nautilida - Hercoglossidae
Cimomia cf. vaughani Gardner 1923 nautiloid