Martin Marrieta Quarry (Oligocene of the United States)

Where: Craven County, North Carolina (35.1° N, 77.0° W: paleocoordinates 34.9° N, 70.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lower Member (River Bend Formation), Rupelian (33.9 - 28.1 Ma)

• "entire exposure... measures only a few meters in thickness" and material is from only the lower part of the exposure

• bed-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, brown, sandy wackestone

• light-brown, very slightly sandy biocalcirudite, predominantly micrite with minor amounts of fine to medium, blocky microspar

Preservation: original calcite

Collection methods: upper levels at same quarry yielded barnacles and echinoids that were not described

molds of aragonitic forms were preserved using latex casts

Primary reference: T. J. Rossbach and J. G. Carter. 1991. Molluscan biostratigraphy of the lower River Bend Formation at Martin Marietta Quarry, New Bern, North Carolina. Journal of Paleontology 65(1):80-118 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 4880: authorized by John Alroy, entered by John Alroy on 28.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• apparently only molds of molluscs are present
unclassified
  -
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Gastropoda
 Heterostropha - Architectonicidae
Architectonica fungina Conrad 1833 sundial
 Heterostropha - Acteonidae
Tornatellaea sp. Conrad 1860 snail
 Lepetellida - Fissurellidae
 Cerithioidea - Turritellidae
Turritella caelatura turret shell
T. caelatura alani n. subsp.
Turritella neusensis n. sp. turret shell
 Neotaenioglossa - Calyptraeidae
Calyptraea (Trochita) cf. aperta Solander 1766 slipper shell
C. (Trochita)
 Epitonioidea - Epitoniidae
 Sorbeoconcha - Naticidae
Euspira vicksburgensis moon snail
two varieties
Sinum sp. Röding 1798 moon snail
 Neogastropoda -
 Neogastropoda - Fasciolariidae
 Neogastropoda - Melongenidae
 Neogastropoda - Cancellariidae
 Neogastropoda - Terebridae
Terebra (Terebrellina) divisura auger snail
T. (Terebrellina) divisura divisura
 Neogastropoda - Conidae
"Conus alveatus" = Conus sauridens
"Conus alveatus" = Conus sauridens Conrad 1833 cone shell
 Neogastropoda - Turridae
 Neogastropoda - Costellariidae
"Turricula (Orthosurcula) aequa n. sp." = Orthosurcula
"Turricula (Orthosurcula) aequa n. sp." = Orthosurcula ribbed mitre
T. (Orthosurcula)
 Neogastropoda - Volutidae
Lyria (Lyria) concinna n. sp. volute
L. (Lyria)
Scaphella saintjeani n. sp. volute
 Neogastropoda - Muricidae
Dermomurex aff. sexangulus Dall 1915 murex snail
Ecphora wheeleri n. sp. murex snail
 Sorbeoconcha - Personidae
Distorsio (Distorsio) crassidens snail
D. (Distorsio)
 Sorbeoconcha - Cassidae
Oocorys vadosus n. sp., Semicassis caelatura, Phalium newbernensis n. sp., "Galeodaria britti n. sp." = Galeodea
Oocorys vadosus n. sp. snail
Phalium newbernensis n. sp. snail
"Galeodaria britti n. sp." = Galeodea snail
 Sorbeoconcha - Ranellidae
Cymatium planinodum n. sp. triton shell
 Sorbeoconcha - Ficidae
Ficus cf. harrisi Martin 1904 fig shell
Ficus mississippiensis Conrad 1848 fig shell
 Sorbeoconcha - Xenophoridae
Xenophora sp. Fischer von Waldheim 1807 carrier shell
Bivalvia
 Nuculanida - Yoldiidae
Yoldia serica Conrad 1848 clam
 Pectinida - Pectinoidae
"Pecten trentensis" = Rebeccapecten trentensis
"Pecten trentensis" = Rebeccapecten trentensis Harris 1919 scallop
 Ostreida - Gryphaeidae
 Arcida - Glycymerididae
Glycymeris aff. cookei Dall 1916 clam
 Cardiida - Veneridae
"Ventricolaria judithae" = Globivenus
"Ventricolaria judithae" = Globivenus venus clam
 Lucinida - Lucinidae
Lucina (Stewartia) micraulax n. sp. clam
L. (Stewartia)
 Carditida - Astartidae
Astarte sp. Sowerby 1816 clam