USGS F-449, Ryukyu Island - Foster (1965) (Pleistocene of Japan)

Also known as USGS F-449

Where: Ryukyu, Japan (24.4° N, 124.2° E: paleocoordinates 24.4° N, 124.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Ryukyu Limestone Formation (Sakishima Group), Late/Upper Pleistocene (0.1 - 0.0 Ma)

• The Ryukyu Limestone unconformably overlies rocks of the Ishigaki Group, the Miyara Formation, the Nosoko Formation, and the Omoto Granite. Two principal lithologies are present - a stratified sandy limestone, and a massive coralliferous limestone. Conglomeratic limestone is common at th base of the formation

• bed-level stratigraphic resolution

Environment/lithology: poorly lithified, brown, yellow, sandy, calcareous limestone and lithified, fine-grained, shelly/skeletal, calcareous limestone

• The sandy foraminiferal limestone consists of sand sized particles loosely to formly cemented together by calcium carbonate. It is white, light tan or cream. The coralliferous limestone is mostly a well lithified, bioclastic, recrystallized limestone composed of tests or fragments of forams, pieces of corals, pieces of algae, and other types of fossils in a groundmass of fine calcareous organic debris.

Size class: macrofossils

Preservation: mold/impression

Reposited in the USNM

Collection methods: quarrying,

• Probably reposited in USGS and USNM collections

Primary reference: H. L. Foster. 1965. Geology of Ishigaki-shima Ryukyu-retto. United States Geological Survey Professional Paper 399(A):1-119 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41606: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative of mollusca. Identified by F.S. MacNeil (mollusca). Corals excluded from list (too many)
Gastropoda
 Trochoidea - Turbinidae
Turbo marmoratus, "Turbo petholatus" = Turbo (Turbo) petholatus, "Marmorostoma agyrostoma" = Turbo (Marmarostoma), "Marmorostoma sp." = Turbo (Marmarostoma), "Marmorostoma (Battillus) cf. cornuta" = Turbo (Marmarostoma), Calcar cf. haematragus
Turbo marmoratus Linnaeus 1758 snail
"Turbo petholatus" = Turbo (Turbo) petholatus Linnaeus 1758 snail
"Marmorostoma agyrostoma" = Turbo (Marmarostoma) snail
"Marmorostoma sp." = Turbo (Marmarostoma) Swainson 1829 snail
"Marmorostoma (Battillus) cf. cornuta" = Turbo (Marmarostoma) snail
 Trochoidea - Trochidae
Tosatrochus attenuatus Jonas 1844 top snail
Monilea belcheri Philippi 1849 top snail
Trochus sp. Linnaeus 1758 top snail
 Cerithioidea - Cerithiidae
Cerithium aluco, "Contumax citrinus" = Cerithium (Contumax), "Contumax nodulosus" = Cerithium (Contumax)
Cerithium aluco cerith snail
"Contumax citrinus" = Cerithium (Contumax) cerith snail
"Contumax nodulosus" = Cerithium (Contumax) cerith snail
 Sorbeoconcha - Strombidae
"Eustrombus thersites" = Strombus (Eustrombus) conch
 Neogastropoda - Mitridae
Mitra punticulata mitre shell
 Neogastropoda - Olividae
Oliva sp. Bruguière 1789 olive snail
 Neogastropoda - Buccinidae
"Cantharus cf. fumosus" = Cantharus (Pollia) fumosus, "Kelletia sp." = Siphonalia (Kelletia)
"Cantharus cf. fumosus" = Cantharus (Pollia) fumosus Dillwyn 1817 true whelk
"Kelletia sp." = Siphonalia (Kelletia) Fischer 1884 true whelk
or Latirus sp.
 Neogastropoda - Nassariidae
Nassarius sp. Duméril 1806 snail
 Neogastropoda - Fasciolariidae
 Neogastropoda - Conidae
Conus sp. Linnaeus 1758 cone shell
Conus cf. generalis Linnaeus 1767 cone shell
"Conus cf. litteratus" = Conus (Lithoconus) litteratus Linnaeus 1758 cone shell
Conus cf. marmoreus Linnaeus 1758 cone shell
Conus cf. ebraeus Linnaeus 1758 cone shell
Conus cf. lividus Bruguière 1792 cone shell
 Neogastropoda - Terebridae
 Neogastropoda - Turbinellidae
Vasum sp. Röding 1798 snail
 Neogastropoda - Muricidae
Coralliophila cf. costularis, "Murex (Chicoreus) cf. microphyllus" = Chicoreus
"Murex (Chicoreus) cf. microphyllus" = Chicoreus murex snail
 Sorbeoconcha - Cassidae
"Cassis (Casmaria) erinacea" = Casmaria erincaeus, Cassis cf. cornuta
"Cassis (Casmaria) erinacea" = Casmaria erincaeus Linnaeus 1758 snail
Cassis cf. cornuta Linnaeus 1758 snail
 Sorbeoconcha - Ranellidae
Cymatium sp. Röding 1798 triton shell
 Sorbeoconcha - Cypraeidae
Cypraea sp. Linnaeus 1758 cowry
 Sorbeoconcha - Naticidae
Mammilla aff. melanostoma Gmelin 1791 moon snail
Naticarius sp. Dumeril 1806 moon snail
"Notocochlis gualteriana" = Natica gualteriana Récluz 1843 moon snail
Bivalvia
 Arcida - Arcidae
"Arca ventricosa" = Lamarcka ventricosa Lamarck 1819 clam
"Arca arabica" = Lamarcka avellana Lamarck 1819 clam
Acar plicata Dillwyn 1817 miniature ark
 Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778 clam
"Glycymeris (Tucetona) aff. nodosa" = Tucetona clam
 Pectinida - Limidae
Lima sowerbyi file clam
 Pectinida - Pectinoidae
Chlamys sp. Röding 1798 scallop
Spondylus sp. Linnaeus 1758 scallop
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Lucinida - Lucinidae
? Lucina sp. Bruguière 1797 clam
 Cardiida - Chamidae
Chama sp. Linnaeus 1758 jewel box
 Cardiida - Veneridae
? Lioconcha sp. Mörch 1853 venus clam
"? Venus (Ventricola) sp." = Antigona (Ventricola) Römer 1867 venus clam
? Periglypta sp. Jukes-Browne 1914 venus clam
Periglypta cf. reticulata Linnaeus 1758 venus clam
 Cardiida - Cardiidae
Tridacna cf. noae, "Cardium (Trachycardium) sp." = Trachycardium, Discors cf. lyrata
Tridacna cf. noae Röding 1798 cockle
"Cardium (Trachycardium) sp." = Trachycardium Mörch 1853 cockle
 Carditida - Carditidae
Cardita cf. variegata Bruguière 1792 clam