Johnson Point - Sample 2 (James City Fm) (Pleistocene of the United States)

Where: Craven County, North Carolina (35.0° N, 77.0° W: paleocoordinates 35.1° N, 76.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: James City Formation, Early/Lower Pleistocene (2.6 - 0.8 Ma)

• Basinal/regional section name: Neuse River.

•Sample 2 collected from ~0.7 m above the base of the section, ~0.2 m above Sample 1, and ~0.6 m below Sample 3. James City Fm was regarded as Pliocene by DuBar and Solliday (1963), though more recent biostratigraphy indicates an Early Pleistocene age (DuBar et al. 1974, Blackwelder 1981, McCartan et al. 1982). The James City Fm is considered time equivalent or slightly younger than the Waccamaw Fm of N. and S. Carolina., and with the Caloosahatchee Fm of Florida. Cronin et a. (1984) proposed an age of 1.3-0.7 Ma for the formation.

• bed-level stratigraphic resolution

Environment/lithology: estuary or bay; unlithified, shelly/skeletal, gray, blue, sandy mudstone

• Shallow subtropical marine bay having fairly open communication with the ocean.
• Medium bluish gray to olive gray, slightly indurated, shelly sandy mudstone to siltstone containing shelly interbeds (presumably sampled).

Size class: macrofossils

Preservation: original aragonite, original calcite

Collection methods: bulk,

• Counts are specimen tallies corrected to estimate numbers of individual organisms (e.g. for bivalves 1 beak fragment = 1/2 individual). Because of moder of preservation (e.g. dismembered zoaria of fragile bryozoans), abundance of certain organisms given as: A, abundant; C, common; R, rare. Repository unknown, possibly at Humboldt State University.

Primary reference: W. Miller. 1990. Checklist of megafossils from the James City Formation (Lower Pleistocene) at Johnson Point, Craven County, North Carolina. Tulane Studies in Geology and Paleontology 22:93-100 [A. Miller/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 60987: authorized by Austin Hendy, entered by Austin Hendy on 29.05.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for bulk samples, which should be very representative given that they have sample sizes in excess of 1-2,000 specimens. Nomenclature modern.
unclassified
  -
Thecostraca
 Balanomorpha - Balanidae
Balanus sp. Da Costa 1778 barnacle
Malacostraca
 Decapoda -
Brachyura indet. Latreille 1802 crab
Gymnolaemata
 Cheilostomata - Bryocryptellidae
 Cheilostomata - Cribrilinidae
 Cheilostomata - Bitectiporidae
 Cheilostomata - Electridae
Electra sp. Lamouroux 1816
 Ctenostomata - Terebriporidae
Gastropoda
 Epitonioidea - Epitoniidae
 Neogastropoda - Turridae
? Turridae indet. Swainson 1840 turrid
 Neogastropoda - Nassariidae
"Nassarius albus" = Nassarius antillarum
"Nassarius albus" = Nassarius antillarum d'Orbigny 1847 snail
 Neogastropoda - Melongenidae
Busycon sp. Röding 1798 whelk
 Neogastropoda - Columbellidae
"Anachis obesa" = Parvanachis obesa, "Anachis lafresnayi" = Cotonopsis (Cotonopsis) lafresnayi, "Mitrella lunata" = Astyris lunata
"Anachis obesa" = Parvanachis obesa Adams 1845 snail
"Anachis lafresnayi" = Cotonopsis (Cotonopsis) lafresnayi Fischer and Bernardi 1857 snail
"Mitrella lunata" = Astyris lunata Say 1826 snail
 Neogastropoda - Muricidae
Urosalpinx cinerea Say 1822 murex snail
 Neogastropoda - Marginellidae
Prunum sp. Swainson 1840 margin shell
 Sorbeoconcha - Naticidae
Polinices sp. Monfort 1810 moon snail
 Sorbeoconcha - Cerithiopsidae
"Seila adamsi" = Seila adamsii, "Cerithiopsis adamsii" = Seila adamsii
"Seila adamsi" = Seila adamsii Lea 1845 snail
"Cerithiopsis adamsii" = Seila adamsii Lea 1845 snail
 Neotaenioglossa - Calyptraeidae
Crepidula convexa Say 1822 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell
Crepidula plana Say 1822 slipper shell
 Vanikoroidea - Eulimidae
? Melanella sp. Bowdich 1822 snail
 Heterostropha - Pyramidellidae
Boonea seminuda Adams 1839 snail
Boonea impressa Say 1822 snail
"Turbonilla (Chemnitzia) sp." = Chemnitzia d'Orbigny 1840 snail
Turbonilla (Pyrgiscus) "sp. A" Philippi 1841 snail
Turbonilla (Pyrgiscus) "sp. B" Philippi 1841 snail
Polyplacophora
 Neoloricata - Chaetopleuridae
Chaetopleura sp. Shuttleworth 1853 chiton
Bivalvia
 Ostreida - Ostreidae
"Ostrea sculpturata" = Conradostrea sculpturata
"Ostrea sculpturata" = Conradostrea sculpturata Conrad 1840 oyster
 Pectinida - Pectinoidae
"Argopecten eboreus" = Carolinapecten eboreus
"Argopecten eboreus" = Carolinapecten eboreus Conrad 1833 scallop
 Arcida - Noetiidae
 Arcida - Arcidae
Anadara aequicostata Conrad 1845 ark
 Lucinida - Lucinidae
"Parvilucina multilineata" = Parvilucina multistriata
"Parvilucina multilineata" = Parvilucina multistriata Conrad 1841 clam
 Hiatellida - Hiatellidae
Hiatella arctica Linnaeus 1767 clam
 Pholadida - Myidae
Sphenia sp. Turton 1822 softshell clam
 Pholadida - Corbulidae
"Corbula conradi" = Caryocorbula conradi
"Corbula conradi" = Caryocorbula conradi Gardner 1944 clam
 Cardiida - Semelidae
Cumingia tellinoides Conrad 1831 clam
Abra aequalis Say 1822 abra
 Cardiida - Mactridae
Mulinia lateralis Say 1822 clam
 Cardiida - Veneridae
Mercenaria permagna Conrad 1838 quahog
 Cardiida - Sportellidae
 Nuculanida - Yoldiidae
Yoldia limatula Say 1831 clam
 Nuculanida - Nuculanidae
Nuculana acuta Conrad 1832 pointed nut clam
 Nuculida - Nuculidae
"Nucula proxima" = Nucula (Nucula) proxima
"Nucula proxima" = Nucula (Nucula) proxima Say 1820 Atlantic Nut Clam
Sedentaria
 Spionida - Spionidae
Polydora sp. Bosk 1801
Anthozoa
 Scleractinia - Rhizangiidae
Septastrea sp. d'Orbigny 1849 stony coral
Demospongiae
 Clavulina - Clionaidae
? Cliona sp. demosponge