Silverdale Marl Quarry (Oligocene of the United States)

Also known as Gillette marl pits

Where: Onslow County, North Carolina (34.8° N, 77.2° W: paleocoordinates 34.8° N, 71.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: N3 foram zone, Haywood Landing Member (Belgrade Formation), Late/Upper Oligocene (28.4 - 23.0 Ma)

• JA: said to be early Miocene, but the Haywood Landing Member belongs to planktonic foram zone N3, which is late Oligocene (Rossbach and Carter 1991)

• member-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, shelly/skeletal, yellow, calcareous sandstone

Size class: macrofossils

Preservation: original aragonite, original calcite

Reposited in the AMNH

Collection methods: bulk, sieve,

• COLLECTOR: Unknown collector. REPOSITORY: AMNH (AMNH Loc. 1059)

Primary reference: L. W. Ward. 1992. Molluscan biostratigraphy of the Miocene Middle Atlantic Coastal Plain of North America. Virginia Museum of Natural History 2 [A. Miller/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 71652: authorized by Mark Uhen, entered by Mark Uhen on 02.05.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• TAXONOMY: Identified by A. Hendy; nomenclature based on revision of Kellum (1926) [PBDB Ref# 11173].
 Arcida - Glycymerididae
Glycymeris anteparilis Kellum 1926 clam
 Arcida - Arcidae
Cunearca silverdalensis Kellum 1926 ark
"Anomalocardia floridana" = Anadara (Sectiarca) floridana Conrad 1846 ark
Arca silverdalensis Kellum 1926 ark
 Ostreida - Ostreidae
Ostrea georgiana Conrad 1834 oyster
 Pectinida - Pectinoidae
Dimarzipecten crocus Ward 1992 scallop
Rebeccapecten berryae Ward 1992 scallop
"Pecten trentensis" = Rebeccapecten trentensis Harris 1919 scallop
Pecten elixatus Conrad 1846 scallop
 Pectinida - Plicatulidae
Plicatula densata Conrad 1843 scallop
 Pectinida - Anomiidae
Anomia onslowensis n. sp. Richards 1943 jingle
Anomia ruffini Conrad 1843 jingle
 Mytilida - Mytilidae
Mytilus conradinus d'Orbigny 1852 mussel
 Carditida - Crassatellidae
"Crassatellites mississippiensis" = Crassatella (Crassatella) mississippiensis
"Crassatellites mississippiensis" = Crassatella (Crassatella) mississippiensis Conrad 1848 clam
subspecies silverdalensis
 Carditida - Carditidae
Cyclocardia trentensis Ward 1992 clam
"Venericardia granulata" = Cyclocardia granulata Say 1824 clam
Venericardia nodifera Kellum 1926 clam
 Carditida - Astartidae
Astarte claytonrayi Ward 1992 clam
Astarte onslowensis Kellum 1926 clam
 Lucinida - Lucinidae
Stewartia anodonta Say 1824 clam
Phacoides silicatus Mansfield 1937 clam
Phacoides nocariensis Kellum 1926 clam
 Cardiida - Veneridae
Antigona lamellacea, "Venus gardnerae" = Mercenaria gardnerae, Mercenaria capax, "Venus erecta" = Mercenaria erecta, Gemma magna, Macrocallista tia, "Macrocallista acuminata" = Macrocallista (Macrocallista) acuminata, "Callista neusensis" = Meretrix neusensis, "Chione spada" = Chione (Chamelea) spada
Antigona lamellacea Kellum 1926 venus clam
"Venus gardnerae" = Mercenaria gardnerae Kellum 1926 quahog
Mercenaria capax Conrad 1843 quahog
"Venus erecta" = Mercenaria erecta Kellum 1926 quahog
Gemma magna Dall 1903 venus clam
n. subspecies striata
Macrocallista tia Kellum 1926 venus clam
"Macrocallista acuminata" = Macrocallista (Macrocallista) acuminata Dall 1903 venus clam
"Callista neusensis" = Meretrix neusensis Harris 1919 venus clam
"Chione spada" = Chione (Chamelea) spada Dall 1903 venus clam
 Cardiida - Ungulinidae
"Diplodonta alta" = Diplodonta (Diplodonta) alta
"Diplodonta alta" = Diplodonta (Diplodonta) alta Dall 1890 clam
 Cardiida - Donacidae
Donax idoneus Conrad 1872 clam
 Cardiida - Cardiidae
Dinocardium taphrium Dall 1900 cockle
Cardium midyetti n. sp. Richards 1943 cockle
 Pholadida - Corbulidae
Corbula burnsi, "Bicorbula idonea" = Bicorbula idonea, "Corbula idonea" = Bicorbula idonea
Corbula burnsi Dall 1937 clam
"Bicorbula idonea" = Bicorbula idonea Conrad 1833 clam
"Corbula idonea" = Bicorbula idonea Conrad 1833 clam
 Lepetellida - Fissurellidae
"Diadora chipolana" = Diodora
"Diadora chipolana" = Diodora snail
n. var. caroliniana
 Cerithioidea - Turritellidae
Turritella fuerta Kellum 1926 turret shell
Turritella tampae Heilprin 1887 turret shell
 Cerithioidea - Potamididae
Potamides silverdalensis n. sp. Richards 1943 horn snail
 Neotaenioglossa - Calyptraeidae
"Crucibulum constrictum" = Crucibulum (Dispotaea) constrictum Conrad 1842 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell
Crepidula plana Say 1822 slipper shell
 Neogastropoda - Melongenidae
Busycon spiniger Conrad 1865 whelk
subspecies onslowensis
Busycon spiniger Conrad 1865 whelk
subspecies onslowensis
 Neogastropoda - Fasciolariidae
Fusinus hoffmani, Fusinus trentensis n. sp., "Siphonalia migrans" = Mariafusus migrans
Fusinus hoffmani Ward 1992 snail
Fusinus trentensis n. sp. Richards 1943 snail
"Siphonalia migrans" = Mariafusus migrans Conrad 1843 snail
 Neogastropoda - Muricidae
Eupleura harbisoni n. sp. Richards 1943 murex snail
"Typhis siphonifera" = Siphonochelus (Pilsbrytyphis) siphonifera Dall 1915 murex snail
Rapana vaughani Mansfield 1937 murex snail
Ecphora tampaensis Dall 1890 murex snail
Tritonopsis biconica Dall 1915 murex snail
"Tritonopsis gilletti" = Tritonopsis gilletti Richards 1943 murex snail
"Rapana gilletti n. sp." = Tritonopsis gilletti Richards 1943 murex snail
Murex kellumi n. sp. Richards 1943 murex snail
Murex davisi n. sp. Richards 1943 murex snail
 Neogastropoda - Volutidae
Lyria carolinensis Kellum 1926 volute
Scaphella stromboidella Kellum 1926 volute
 Neogastropoda - Conidae
Conus postalveatus Kellum 1926 cone shell
 Neogastropoda - Terebridae
Terebra whitfieldi auger snail
 Neogastropoda - Olividae
"Oliva posti" = Oliva (Oliva) posti, Olivella gardnerae n. sp.
"Oliva posti" = Oliva (Oliva) posti Dall 1915 olive snail
Olivella gardnerae n. sp. Richards 1943 olive snail
 Sorbeoconcha - Naticidae
"Polinices duplicata" = Neverita duplicatus, "Polinices judsoni" = Natica judsoni, "Polinices hemicrypta" = Lunatia hemicrypta, Sinum imperforatum
"Polinices duplicata" = Neverita duplicatus Say 1822 moon snail
"Polinices judsoni" = Natica judsoni Maury 1910 moon snail
"Polinices hemicrypta" = Lunatia hemicrypta Gabb 1860 moon snail
Sinum imperforatum Dall 1915 moon snail