Avalon (unknown depths) - Kirkwood Formation (Miocene of the United States)

Where: Cape May County, New Jersey (39.1° N, 74.7° W: paleocoordinates 39.3° N, 70.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• No lithostratigraphic details or stratigraphic relationships provided in text. Equivalent in age and slightly older than the Calvert Formaiton of Maryland and Virginia. Overlain by the Cohansey Sand with a time transgressive contact, Kirkwood Formation is Burdigalian-Langhian in age. Collections from between depths of 375 and 815 ft.

• member-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified sandstone

• No geologic or paleoenvironmental data reported in text. Deposited in a sublittoral to nearshore environments
• Fossiliferous sandstone and quartzite.

Size class: macrofossils

Collection methods: Reposited in the ANSP collections. From Richards and Harbison (1943): "The Woolman Collection yielded miocene fossils between the depths of 375 amd 815 ft in an Avalon well. Unfortunately, the best collection of shells has no data as to depth.

Primary reference: H. G. Richards and A. Harbison. 1942. Miocene invertebrate fauna of New Jersey. Proceedings of the Academy of Natural Sciences of Philadelphia 94:167-250 [A. Miller/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 59724: authorized by Austin Hendy, entered by Austin Hendy on 10.04.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for Gastropoda, Bivalvia and Scaphopoda. Nomenclature is somewhat antiquated but provided to species resolution and authoritative.
Gastropoda
 Cerithioidea - Turritellidae
Turritella cumberlandia Conrad 1863 turret shell
"Turritella plebeia" = Mariacolpus plebeia Say 1824 turret shell
 Neotaenioglossa - Calyptraeidae
Crepidula plana Say 1822 slipper shell
"Crucibulum costatum" = Crucibulum (Dispotaea) costata Say 1820 slipper shell
 Sorbeoconcha - Cerithiopsidae
 Neogastropoda - Columbellidae
 Sorbeoconcha - Naticidae
"Polinices hemicrypta" = Lunatia hemicrypta, "Polinices duplicata" = Neverita duplicatus
"Polinices hemicrypta" = Lunatia hemicrypta Gabb 1860 moon snail
"Polinices duplicata" = Neverita duplicatus Say 1822 moon snail
Bivalvia
 Lucinida - Lucinidae
"Phacoides trisulcata" = Cavilinga trisulcata
"Phacoides trisulcata" = Cavilinga trisulcata Conrad 1841 clam
Subspecies: P. trisulcata whitfieldi
 Pholadida - Corbulidae
"Corbula elevata" = Varicorbula elevata
"Corbula elevata" = Varicorbula elevata Conrad 1838 clam
 Cardiida - Donacidae
 Carditida - Crassatellidae