Tanohata Area, Hiraiga Formation, Honshu (Cretaceous of Japan)

Where: Iwate, Japan (40.0° N, 141.8° E: paleocoordinates 52.8° N, 141.5° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Hiraiga Formation (Miyako Group), Aptian (125.0 - 113.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; calcareous sandstone

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: I. Hayami. 1975. A systematic survey of the Mesozoic Bivalvia from Japan. The University Museum, The University of Tokyo, Bulletin (10) [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40553: authorized by Martin Aberhan, entered by Sabine Nürnberg on 25.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Parallelodontidae
 Arcida - Cucullaeidae
 Arcida - Glycymerididae
Glycymeris (Hanaia) densilineata, "Glycymeris (? Glycymerita) haipensis" = Glycymerita
"Glycymeris (? Glycymerita) haipensis" = Glycymerita clam
 Pectinida - Anomiidae
 Pectinida - Limidae
 Pectinida - Pectinoidae
"Chlamys robinaldina" = Mimachlamys robinaldina Orbigny 1847 scallop
 Pectinida - Neitheoidae
 Ostreida - Bakevelliidae
 Ostreida - Pinnidae
 Ostreida - Gryphaeidae
? Pycnodonte sp. Fischer von Waldheim 1835 oyster
"Amphidonte (Ceratostreon) yabei" = Ceratostreon oyster
 Ostreida - Ostreidae
 Mytilida - Mytilidae
 Lucinida - Lucinidae
 Pholadomyida - Pholadomyidae
 Pandorida - Laternulidae
 Thraciida - Periplomatidae
 Pholadida - Teredinidae
 Hippuritida - Polyconitidae
 Cardiida - Veneridae
 Cardiida - Cardiidae
 Hiatellida - Hiatellidae
Panopea (Myopsis) plicata Sowerby 1829 clam
 Carditida - Astartidae
 Carditida - Crassatellidae
 Trigoniida - Megatrigonioidae
 Trigoniida - Trigoniidae
Nipponitrigonia kikuchiana Yokoyama 1891 clam
 Nuculanida - Nuculanidae
Mesosaccella insignis pointed nut clam