Chappaquiddick Island (Eocene of the United States)

Where: Massachusetts (41.4° N, 70.5° W: paleocoordinates 40.6° N, 57.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Eocene (56.0 - 33.9 Ma)

• STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic units. THICKNESS: AGE: STRATIGRAPHIC POSITION: From reworked concretions within unit.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified, concretionary, ferruginous, shelly/skeletal, carbonaceous siltstone

• ENVIRONMENT: Shallow marine siliciclastic setting.
• SPECIFIC LITHOLOGY: Ferruginous fine-grained siliciclastic concretions LITHIFICATION:

Size class: macrofossils

Preservation: concretion, original aragonite, original calcite

Collected by Hollick; reposited in the AMNH

• COLLECTOR: A. Hollick. REPOSITORY: Probably AMNH, New York.

Primary reference: T. C. Brown. 1905. A new lower Tertiary fauna from Chappaquiddick Island, Martha's Vineyard. American Journal of Science 20:229-238 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80299: authorized by Austin Hendy, entered by Austin Hendy on 11.04.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Antiquated, but revised by A. Hendy where possible. Initially identified by R.P. Whitfield (AMNH).
Show authors, comments, and common names
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
 Heterostropha - Pyramidellidae
Odostomia crenulata, Odostomia semicostata
Odostomia crenulata Brown 1905 snail
Odostomia semicostata Brown 1905 snail
 Cerithioidea - Turritellidae
Turritella sp.
Turritella sp. Lamarck 1799 turret shell
 Neogastropoda - Terebridae
Terebra sp., Terebra juvenicostata
Terebra sp. Bruguière 1789 auger snail
Terebra juvenicostata Brown 1905 auger snail
Bivalvia
 Nuculida - Nuculidae
Nucula aff. potomacensis
 Mytilida - Mytilidae
"Modiola hollicki" = Modiolus hollicki, "Modiola vineyardensis" = Brachidontes vineyardensis
"Modiola hollicki" = Modiolus hollicki Brown 1905 mussel
"Modiola vineyardensis" = Brachidontes vineyardensis Brown 1905 mussel
SUBSPECIES: Modiola vineyardensis
 Pectinida - Anomiidae
Anomia simplexiformis, Anomia paucistriata
Anomia simplexiformis Brown 1905 jingle
Anomia paucistriata Brown 1905 jingle
 Ostreida - Ostreidae
Ostrea sp.
Ostrea sp. Linnaeus 1758 oyster
 Arcida - Glycymerididae
Glycymeris aff. wrigleyi
Glycymeris aff. wrigleyi Curry 1958 clam
 Cardiida - Cardiidae
Cardium sp.
Cardium sp. Linnaeus 1758 cockle
 Pholadida - Corbulidae
"Corbula whitfieldi" = Cuneocorbula whitfieldi
"Corbula whitfieldi" = Cuneocorbula whitfieldi Brown 1905 clam