Coffee Mill Hammock Mbr, Thompson Fm - Palm Beach County (Pleistocene of the United States)

Where: Palm Beach County, Florida (26.7° N, 80.4° W: paleocoordinates 26.6° N, 80.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Coffee Mill Hammock Member (Thompson Formation), Late/Upper Pleistocene (0.1 - 0.0 Ma)

• STRATIGRAPHIC RELATIONS: Stratigraphically above the Bell Glade Mbr of the Fort Thompson Fm. AGE: late Sangamonian interglacial stage (Late Pleistocene) based on Table 2 of Petuch (2004). STRATIGRAPHIC POSITION: Occurrences from various, unspecified stratigraphic positions in member. Separated from underlying units by regressions during the Illinoian glacial stage.

• member-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; unlithified marl

• ENVIRONMENT: "Mangrove islands and extensive turtle grass beds" according to Petuch (2004). Coffee Mill Mbr contains the Chione elevata community (shallow lagoon Thalassia beds) and the Pyrazisinus ultimus community (mangrove forrests and intertidal mud flats). SEQUENCE STRATIGRAPHY: Acculated during interglacial events. Petuch (2004) states "during sea level highstand", though presumably accumulation may have initiated during preceding transgressive events [enterer].
• SPECIFIC LITHOLOGY: Marl. No detailed lithologic description reported in text. LITHIFICATION: Unlithified, based on figured specimens.

Size class: macrofossils

Preservation: original aragonite, original calcite

Reposited in the AMNH

Collection methods: quarrying,

• COLLECTOR: Presumably collected by E.J. Petuch. REPOSITORY: Material reposited at AMNH.

Primary reference: E. J. Petuch. 2004. Cenozoic Seas: The view from eastern North America [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 62458: authorized by Austin Hendy, entered by Austin Hendy on 20.07.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COMPLETENESS: Limited, only includes taxa described by Petuch (2004) from Coffee Mill Hammock Member, Palm County, Florida. NOMENCLATURE: Authoritative publication, with modern nomenclature.
Show authors, comments, and common names
Gastropoda
 Cerithioidea - Batillariidae
Pyrazisinus ultimus n. sp.
Pyrazisinus ultimus n. sp. Petuch 2004 snail
 Cerithioidea - Potamididae
Cerithidea scalariformis, "Cerithidea beattyi" = Cerithidea costatus
Cerithidea scalariformis Say 1825 horn snail
Subspecies: C. scalariformis palmbeachensis
"Cerithidea beattyi" = Cerithidea costatus da Costa 1778 horn snail
Subspecies: C. beattyi lakeworthensis