Maizuru Zone, Heki Formation, Honshu (Triassic of Japan)

Where: Fukui, Japan (35.5° N, 135.3° E: paleocoordinates 44.0° N, 119.7° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Heki Formation, Carnian (237.0 - 228.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; 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 40119: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 18.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Parallelodontidae
 Pectinida - Pectinoidae
 Pectinida - Plicatulidae
 Ostreida - Bakevelliidae
 Ostreida - Pinnidae
Pinna (Pinna) sp. Linnaeus 1758 oyster
 Carditida - Cardiniidae
 Poromyida - Cuspidariidae
 Unionida - Actinodontophoridae
 Trigoniida - Trigoniidae
Minetrigonia hegiensis clam
subsp. hegiensis
 Trigoniida - Trigonodidae