Ura ("Megashell bed", Takamatsu shell sand facies) [Toshima Sand] (Pleistocene of Japan)

Where: Japan (34.6° N, 137.2° E: paleocoordinates 34.8° N, 137.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Toshima Sand Formation (Toyohashi Group), Pleistocene (2.6 - 0.0 Ma)

• STRATIGRAPHIC RELATIONS: From the Toshima Sand of the Toyohasi Gp, which overlies the Akasawa SIlt, and is overlain by the Tonami Gravel of the Tahara Gp. AGE: Pleistocene. STRATIGRAPHIC POSITION: From the "megashell bed", Takamatsu shell sand facies of the Toshima Sand.

• bed-level stratigraphic resolution

Environment/lithology: marine; unlithified sandstone

• SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: Unlithified.

Size class: macrofossils

Collected by Hayasaka

Collection methods: surface (in situ),

• COLLECTOR: S. Hayasaka. REPOSITORY: Possibly Tohoku University.

Primary reference: S. Hayasaka. 1962. Summary of the geology and paleontology of the Atsumi Peninsula, Aichi Prefecture, Japan. Science reports of the Tohoku Imperial University. 2nd series, Geology 195-217 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 96969: authorized by Austin Hendy, entered by Austin Hendy on 15.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for molluscs. NOMENCLATURE: Not an authoritative publication, with antiquated nomenclature, but with species-resolution identifications.
Bivalvia
 Arcida - Arcidae
Trisidos (Trisidos) tortuosa Linnaeus 1758 clam
SUBSPECIES: Trisidors (Trisidors) tortuosa kiyonoi
 Ostreida - Ostreidae
 Pectinida - Anomiidae
 Pectinida - Pectinoidae
Pecten (Pecten) albicans Schröter 1802 scallop
Chlamys (Chlamys) farreri scallop
SUBSPECIES: Chlamys (Chlamys) farreri nipponensis
 Hiatellida - Hiatellidae
"Panope japonica" = Panopea
"Panope japonica" = Panopea clam
 Cardiida - Veneridae
Venerupis (Amygdala) variegata venus clam
SUBSPECIES: Venerupis (Amygdala) variegata kioroshiensis
 Cardiida - Tellinidae
"Fabulina nitidula" = Tellina (Fabulina)
"Fabulina nitidula" = Tellina (Fabulina) tellin clam
 Cardiida - Cardiidae
Fulvia mutica Reeve 1844 cockle
 Pholadida - Myidae
"Mya (Arenomya) japonica" = Mya (Arenomya) arenaria, Venatomya truncata
"Mya (Arenomya) japonica" = Mya (Arenomya) arenaria Linnaeus 1758 softshell clam
SUBSPECIES: Mya (Arenomya) japonica oonogai
Venatomya truncata softshell clam
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium (Paradentalium) octangulatum tusk shell
SUBSPECIES Dentalium (Paradentalium) octangulatum hexagonum
Gastropoda
 Sorbeoconcha - Strombidae
"Canarium (Labiostrombus) japonicum" = Strombus (Labiostrombus)
"Canarium (Labiostrombus) japonicum" = Strombus (Labiostrombus) conch
 Neogastropoda - Muricidae
Rapana thomasiana murex snail