Off Kawashiri-misaki - Early Pleistocene, Yamaguchi Prefecture: Early/Lower Pleistocene, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Neogastropoda - Buccinidae
Volutharpa perryi
1 specimen
Searlesia fuscolabiata Smith 1874
2 specimens
synonym of Searlesia modesta
Bivalvia - Pectinida - Pectinidae
Chlamys sp. Röding 1798
1 specimen
Chlamys (Azumapecten) cf. nipponensis
1 specimen
Bivalvia - Arcida - Cucullaeidae
Arca boucardi Jousseaume 1894
8 specimens
recombined as Tetrarca boucardi
Bivalvia - Cardiida - Ungulinidae
Felaniella usta
1 specimen
synonym of Diplodonta
Bivalvia - Cardiida - Veneridae
Callithaca adamsi (Reeve 1863)
13 specimens
Saxidomus purpuratus
14 specimens
Bivalvia - Pholadida - Myidae
Mya (Arenomya) cf. japonica (Jay 1857)
15 specimens
synonym of Mya (Arenomya) arenaria
Bivalvia - Pholadida - Corbulidae
? Anisocorbula sp. Iredale 1930
1 specimen
spelled with current rank as Corbula (Anisocorbula)
Bivalvia - Lucinida - Lucinidae
Lucinoma annulata (Reeve 1850)
1 specimen
recombined as Lucinoma annulatum
Thecostraca - Balanomorpha - Balanidae
"Balanus" sp. Da Costa 1778
1 specimen
see common names

Geography
Country:Japan State/province:Yamaguchi
Coordinates: 34.8° North, 130.6° East (view map)
Paleocoordinates:35.1° North, 130.2° East
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Quaternary Epoch:Pleistocene
10 m.y. bin:Cenozoic 6
Key time interval:Early/Lower Pleistocene
Age range of interval:2.58000 - 0.77400 m.y. ago
Stratigraphy
Local section:Kawashiri-misaki
Regional section:Yamaguchi
Stratigraphic resolution:bed
Stratigraphy comments: AGE: Planktonic foraminifers and nannoplankton show that the age of the Mollusca is Early Pleistocene, estimated at about 1.5 Ma.
Lithology and environment
Primary lithology: lithified calcareous "siliciclastic"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: No lithology data reported in text, other than calcareous and rubble (suggesting lithified). A calcareous siliciclastic lithology is hence assigned. LITHIFICATION: Lithified, based on comments that material was derived from fragmented rubble.
Environment:estuary/bay
Geology comments: BATHYMETRY: Embayment. THERMAL TOLERANCES: Cool water fauna. The cool to cold Omma-Manganji molluscan fauna are prevalent, however the warm-water fauna is represented by a couple taxa. Temperate to cool marine climate.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: COLLECTOR: Unknown collector, perhaps T. Matsumoto (fisherman). REPOSITORY: Yamaguchi Prefectural Museum.
Taxonomic list comments:COMPLETENESS: Representative, though not necessarily retaing ecologic fidelity as material was dredged from a local area of sea floor. NOMENCLATURE: Not an authoritative publication, slightly outdated nomenclature, many taxa no identified to species resolution and limited used of sugeneric classification.
Metadata
Database number:62300
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2006-07-17 21:03:21 Last modified:2013-11-25 13:37:23
Access level:the public Released:2006-07-17 21:03:21
Creative Commons license:CC BY
Reference information

Primary reference:
18005. K. Okamoto and M. Ibaraki. 1988. Early Pleistocene fossil Mollusca from the sea of Japan off Yamaguchi Prefecture. Saito Ho-on Kai Special Publication 1:523-532 [A. Miller/A. Hendy/P. Wagner]