Martin Marietta Georgetown Quarry (Eocene of the United States)

Where: Georgetown County, South Carolina (33.3° N, 79.7° W: paleocoordinates 33.6° N, 68.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Santee Limestone Formation, Lutetian (47.8 - 41.3 Ma)

Environment/lithology: lithified, shelly/skeletal wackestone and grainstone

• bryozoan biomicrudite/biosparrudite

Size class: macrofossils

Primary reference: P. M. Kier. 1980. The Echinoids of the Middle Eocene Warley Hill Formation, Santee Limestone, and Castle Hayne Limestone of North and South Carolina. Smithsonian Contributions to Paleobiology 39:1-102 [A. Miller/K. Layou]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5462: authorized by Arnold Miller, entered by Karen Layou on 04.10.1999, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Echinoidea
 Cidaroida - Cidaridae
Cidaris pratti
Cidaris pratti Clark and Twitchell 1915 pencil urchin
 Clypeasteroida - Protoscutellidae
Protoscutella conradi
Protoscutella conradi Cotteau 1891 sand dollar
 Cassiduloida - Neolampadidae
Eurhodia holmesi, Eurhodia rugosa
Eurhodia holmesi sea urchin
Eurhodia rugosa Ravenel 1848 sea urchin
Eurhodia rugosa rugosa
 Spatangoida - Prenasteridae
Unifascia carolinensis
Unifascia carolinensis Clark and Twitchell 1915 heart urchin
 Spatangoida - Schizasteridae
Agassizia inflata, Linthia harmatuki, Linthia wilmingtonensis, Linthia hanoverensis
Agassizia inflata Jackson 1922 heart urchin
Agassizia wilmingtonensis inflata, new subspecies
Linthia harmatuki Kier 1980 heart urchin
n. sp.
Linthia wilmingtonensis Clark and Twitchell 1915 heart urchin
Linthia hanoverensis Kellum 1926 heart urchin
Cephalopoda
 Nautilida - Aturiidae
Aturia sp.2
Aturia sp.2 Bronn 1838 nautiloid
 Nautilida - Nautilidae
Eutrephoceras carolinense2
Eutrephoceras carolinense2 Kellum 1926 nautiloid
Gastropoda
 Cerithioidea - Turritellidae
Mesalia sp.2
Mesalia sp.2 Gray 1847 turret shell
 Sorbeoconcha - Hipponicidae
Cheilea sp.2
Cheilea sp.2 Modeer 1793 hoof shell
 Neogastropoda - Volutidae
Lyrischapa sp.2, Santeevoluta wilmingtonensis2
Lyrischapa sp.2 Aldrich 1911 volute
Santeevoluta wilmingtonensis2 Brown and Pilsbry 1912 volute
Bivalvia
 Mytilida - Mytilidae
Modiolus cawcawensis2
Modiolus cawcawensis2 Harris 1919 mussel
 Pectinida - Pectinoidae
Chlamys sp.2
Chlamys sp.2 Röding 1798 scallop
 Pectinida - Plicatulidae
Plicatula filamentosa2
Plicatula filamentosa2 Conrad 1833 scallop
 Ostreida - Malleidae
Nayadina (Exputens) sp.2
Nayadina (Exputens) sp.2 Clark 1934 oyster
 Ostreida - Pinnidae
? Atrina sp.2
? Atrina sp.2 Gray 1842 oyster
 Arcida - Arcidae
Barbatia sp.2
Barbatia sp.2 Gray 1842 clam
 Carditida - Crassatellidae
Crassatella eutawacolens2, Crassatella wilcoxi2
 Carditida - Carditidae
Glyptoactis (Claibornicardia) sp.2
Glyptoactis (Claibornicardia) sp.2 Stenzel and Krause 1957 clam
 Carditida - Astartidae
Lirodiscus (Crustuloides) sp.2
Malacostraca
 Decapoda - Zanthopsidae
Martinetta palmeri1
Martinetta palmeri1 Blow and Manning 1997 crab
1Blow and Manning 1997; 2Campbell 1995