Pamunkey River (H76-64-3) (Eocene of the United States)

Also known as H76-64

Where: Hanover County, Virginia (37.5° N, 76.8° W: paleocoordinates 37.5° N, 64.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Nanjemoy Formation, Lutetian (47.8 - 41.3 Ma)

• Upper Lisbon equivalent

• bed-level stratigraphic resolution

Environment/lithology: offshore; unlithified, gray, green, argillaceous, silty siltstone

• "tough, gray-green clay-sand; very fossiliferous with shells becoming smaller and more scattered up section. upper contact transitional with overlying bed."

Collection methods: bulk, mechanical, sieve,

Primary reference: T. A. Hansen. 1978. Ecological control of evolutionary rates in Paleocene - Eocene marine molluscs. Ph.D. Thesis, Yale University 1-310 [T. Hansen/M. Sommers/A. Clement]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 1446: authorized by Thor Hansen, entered by Mike Sommers on 15.04.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
  -
Anthozoa indet. Ehrenberg 1834
coral sp. B
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
misc. gastropods, 10 species, 1 specimen each.
 Neotaenioglossa - Calyptraeidae
"Calyptraea aperta" = Calyptraea (Trochita) aperta Solander 1766 slipper shell
Crepidula dumosa Conrad 1834 slipper shell
 Cerithioidea - Turritellidae
Turritella nasuta turret shell
 Sorbeoconcha - Rostellariidae
Calyptraphorus velatus Conrad 1833 snail
 Neogastropoda - Volutidae
Athleta cf. haleanus, "Athleta cf. petrosus" = Athleta petrosa
Athleta cf. haleanus volute
"cf. ? haleanus" - originally entered as "Athleta cf. ? haleanus"
"Athleta cf. petrosus" = Athleta petrosa Conrad 1833 volute
originally entered as "Athleta cf. petrosus"
 Sorbeoconcha - Xenophoridae
Xenophora sp. Fischer von Waldheim 1807 carrier shell
 Sorbeoconcha - Naticidae
Naticidae indet. Guilding 1834 moon snail
"Naticid sp."
? Sinum sp. Röding 1798 moon snail
originally entered as "? Sinum sp."
 Sorbeoconcha - Hipponicidae
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
misc. bivalves, 10 species, 1 specimen each.
 Arcida - Arcidae
Pachecoa sp. Harris 1919 clam
sp. B
Pachecoa cf. decisa clam
originally entered as "Pachecoa cf. decisa"
Barbatia rhomboidella Lea 1833 clam
 Arcida - Glycymerididae
Glycymeris idonea Conrad 1865 clam
 Pectinida - Plicatulidae
Plicatula sp. Lamarck 1801 scallop
 Pectinida - Anomiidae
Anomia sp. Linnaeus 1758 jingle
 Pectinida - Pectinoidae
Eburneopecten cf. scintillatus Conrad 1854 scallop
originally entered as "Eburneopecten cf. scintillatus"
Chlamys wahtubbeana Dall 1898 scallop
 Ostreida - Pteriidae
Pteria ? limula Conrad 1833 pearl oyster
originally entered as "Pteria ? limula"
 Ostreida - Ostreidae
Cubitostrea sellaeformis Conrad 1832 oyster
 Lucinida - Lucinidae
Lucinidae indet. Fleming 1828 clam
"Lucinid sp. A"
? Myrtea cf. curta clam
originally entered as "? Myrtaea cf. curta"
 Pholadida - Corbulidae
"Corbula subengonata" = Cuneocorbula subengonata Dall 1898 clam
 Cardiida - Veneridae
Callista perovata Conrad 1833 venus clam
 Cardiida - Mactridae
Spisula parilis Conrad 1833 clam
 Cardiida - Tellinidae
Tellinidae indet. Blainville 1814 tellin clam
Tellinid
 Carditida - Astartidae
 Carditida - Carditidae
Venericardia sp. Lamarck 1801 clam
"Venericardia densata" = Venericardia (Venericor) densata Conrad 1845 clam
 Carditida - Crassatellidae
Crassatella sp. Lamarck 1799 clam
 Nuculida - Nuculidae
"Nucula ovula" = Nucula (Nucula) ovula
"Nucula ovula" = Nucula (Nucula) ovula Lea 1833 nut clam
 Nuculanida - Nuculanidae
Nuculana coelatella pointed nut clam
Calorhadia semen Lea 1883 pointed nut clam
Calorhadia bella pointed nut clam
Calorhadia opulenta pointed nut clam
Saccella cf. catasarca pointed nut clam
originally entered as "Saccella cf. catasarca"
Orthoyoldia psammotaea Dall 1898 pointed nut clam
Scaphopoda
 Gadilida - Gadilidae
Cadulus sp. Philippi 1844 tusk shell
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell