Brandywine Lighthouse well, 385 ft [Kirkwood Fm] (Miocene of the United States)

Where: Cape May County, New Jersey (39.0° N, 75.1° W: paleocoordinates 39.2° N, 70.7° W)

• outcrop-level geographic resolution

When: Kirkwood Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Kirkwood Fm, which is in this section overlies "Jackson-age" deposits, and underlies the Cohansey Fm. AGE: Miocene in text; Early Miocene on the basis of more recent dating and faunal composition. STRATIGRAPHIC POSITION: From 385 ft in well.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, shelly/skeletal siltstone and poorly lithified, shelly/skeletal sandstone

• ENVIRONMENT: Shallow marine, siliciclastic.
• SPECIFIC LITHOLOGY: Silt, sand, and shells. LITHIFICATION: Poorly lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: original aragonite

Collected by McGee

Collection methods: core,

• COLLECTOR: T.C. McGee of the Artesian Well Drilling Company. REPOSITORY: New Jersey State Museum, ANSP.

Primary reference: H. G. Richards and A. Harbison. 1944. Well-boring at Brandywine Lighthouse in Delaware Bay. Part I. - Geology and Macrofossils. Notulae Naturae 132:1-14 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 92762: authorized by Austin Hendy, entered by Austin Hendy on 28.11.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Fairly antiquated nomenclature with species resolution assignments.
Gastropoda
 Opisthobranchia - Cylichnidae
Acteocina kirkwoodiana n. sp. Richards and Harbison 1944 barrel-bubble
 Neotaenioglossa - Calyptraeidae
"Crucibulum costatum" = Crucibulum (Dispotaea) costata Say 1820 slipper shell
"Calyptraea aperta" = Calyptraea (Trochita) aperta Solander 1766 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell
 Sorbeoconcha - Naticidae
"Polinices duplicata" = Neverita duplicatus
"Polinices duplicata" = Neverita duplicatus Say 1822 moon snail
 Neogastropoda - Nassariidae
Nassarius trivittatoides Whitfield 1894 snail
 Neogastropoda - Columbellidae
"Mitrella communis" = Astyris communis
"Mitrella communis" = Astyris communis Conrad 1862 snail
 Sorbeoconcha - Cerithiopsidae
 Cerithioidea - Turritellidae
Turritella cumberlandia Conrad 1863 turret shell
Bivalvia
 Cardiida - Mactridae
Mulinia lateralis Say 1822 clam
 Cardiida - Veneridae
"Venus plena" = Mercenaria plena
"Venus plena" = Mercenaria plena Conrad 1869 quahog
 Pholadida - Corbulidae
Corbula inaequalis Say 1824 clam
 Carditida - Astartidae
Astarte distans Conrad 1862 clam
SUBSPECIES: Astarte distans floridana
"Astarte undulata" = Astarte (Ashtarotha) undulata Say 1824 clam
 Arcida - Arcidae
"Arca subrostrata" = Dallarca subrostrata
"Arca subrostrata" = Dallarca subrostrata Conrad 1841 clam
 Pectinida - Pectinoidae
"Pecten madisonius" = Chesapecten madisonius
"Pecten madisonius" = Chesapecten madisonius Say 1824 scallop
Scaphopoda
 Gadilida - Gadilidae
Cadulus conradi Pilsbry and Harbison 1933 tusk shell