Izumi Mountains, Izumi Group, Honshu (Cretaceous of Japan)

Where: Osaka, Wakayama, Japan (34.5° N, 135.4° E: paleocoordinates 43.2° N, 124.5° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Minato, Azenotani & Shichi Shale, Kitaama Sandstone, Yoroizaki Sandstone Formation (Izumi Group), Campanian (83.6 - 72.1 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; shale and 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 39905: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 12.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Parallelodontidae
 Pectinida - Pectinoidae
 Carditida - Astartidae
 Cardiida - Arcticidae
 Solenida - Pharidae
 Pandorida - Laternulidae
Periplomya nagaoi clam
subsp. nagaoi and subsp. brevis
 Lucinida - Mactromyidae
 Nuculida - Nuculidae
 Protobranchia - Sareptidae
 Protobranchia - Nuculanidae
Jupiteria (Ezonuculana) mactraeformis Nagao 1932 pointed nut clam