USGS M-279d, Ryukyu - Foster (1965) (Pliocene of Japan)

Also known as USGS M-279d

Where: Ryukyu, Japan (24.4° N, 124.2° E: paleocoordinates 24.6° N, 123.9° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Bunera Clay Member (Nagura Gravel Formation), Late/Upper Pliocene (3.6 - 2.6 Ma)

• The Bunera Clay member of the Nagura Gravel is generally overlain by Pleistocene gravel deposits and may rest unconformably on schist. The clay's thickness is unknown, though is less than 5 m at its type section.

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, gray, blue, silty, sandy, calcareous claystone

• Offshore marine habitat on a muddy bottom of moderate depth.
• Medium to dark gray or bluish gray. It is silty or sandy in places and slightly calcareous

Size class: macrofossils

Preservation: original aragonite, original calcite

Reposited in the USNM

Collection methods: quarrying,

• Collections probably reposited in USGS and USNM. Identified by F.S. MacNeil

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 41594: authorized by Austin Hendy, entered by Austin Hendy on 17.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Forams and plant fossils are present in the Bunera Clay Member at these locations by are not listed.
 Cardiida - Veneridae
Paphia aurabilis venus clam
Circe sp. Schumacher 1817 venus clam
 Cardiida - Cardiidae
 Neogastropoda - Nassariidae
cf. Nassarius dorsatus Röding 1798 snail
 Neogastropoda - Fasciolariidae
cf. Fusinus cf. colus Linnaeus 1758 snail
 Neogastropoda - Turridae
 Naticoidea - Naticidae
Natica stellatus moon snail
 Tonnoidea - Ranellidae
? Cymatium sp. Röding 1798 triton shell
? Cymatium sinense triton shell
 Sorbeoconcha - Cerithiidae
Bittium sp. Gray 1847 cerith snail
 Architectonicoidea - Architectonicidae
 Turbinoidea - Turbinidae
Calcar sp. Montfort 1810 snail