Locality 4 (Glycymeris-Dosinia assemblage) - Shimonoseki City (Ashiya Gp) (Oligocene of Japan)

Also known as GD, 4

Where: Yamaguchi, Japan (34.0° N, 130.9° E: paleocoordinates 39.2° N, 127.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ashiya Group, Late/Upper Oligocene (28.4 - 23.0 Ma)

• No stratigraphic data available as manuscript is in Japanese.

• bed-level stratigraphic resolution

Environment/lithology: coastal; medium-grained, coarse sandstone

• Sedimentary facies and molluscan assemblages suggest an environment in the upper euneritic zone of a temperate to subtropical sea. From Glycymeris-Dosinia association
• SPECIFIC: medium-coarse sandstone. GENERAL: The Ashiya Group is characterised by a sandstone-dominant shallw marine sequence (about 150 m thick), in which sedimentary facies include cross-stratified sandstone, parallel stratified sandstone, bioturbated sandstone, and sandstone/siltstone couplet facies.

Size class: macrofossils

Collection methods: bulk, quarrying,

• No collection data available as manuscript is in Japanese. Material is reposited in the Dept of Earth and Planetary Sciences, Faculty of Science, Kyushu University, and in Shimonoseki City Archaeological Museum, Shimonoseki.

Primary reference: K. Okamoto and T. Sakai. 1995. Sedimentary facies and fossil molluscs of the Oligocene Ashiya Group in the Hikoshima Takenokojim and Nishiyama area, Shimonoseki City, Southwest Japan. Bulletin of the Mizunami Fossil Museum 22:19-50 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 51437: authorized by Austin Hendy, entered by Austin Hendy on 05.06.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Taxonomic list is exhaustive for mollusca and includes other groups (Penguins, Sharks etc). Nomenclature is of a high quality.
Show authors, comments, and common names
Mammalia
 Cetacea -
Metasqualodon symmetricus
Metasqualodon symmetricus Okazaki 1982 whale
Bivalvia
 Cardiida - Mactridae
Pseudocardium sp.
Pseudocardium sp. Gabb 1866 clam
=Spisula sp. A of Nagao
 Cardiida - Veneridae
"Dosinia (Phacosoma) chikuzenensis" = Dosinia nomurai
"Dosinia (Phacosoma) chikuzenensis" = Dosinia nomurai Otuka 1934 venus clam
 Arcida - Glycymerididae
Glycymeris (Veletuceta) cisshuensis
Gastropoda
 Caenogastropoda - Fasciolariidae
"Euspira ashiyaensis" = Euspira meisensis
"Euspira ashiyaensis" = Euspira meisensis Makiyama 1926 moon snail