Bunjo, Ochi, Sakawa area, Bunjo Formation, Kochi: Aptian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Trigoniida - Megatrigoniidae
Bivalvia - Cardiida - Cardiidae
4 specimens
4 specimens
Bivalvia - Carditida - Carditidae
4 specimens
Bivalvia - Ostreida - Pinnidae
Bivalvia - Ostreida - Bakevelliidae
2 specimens
4 specimens
Bivalvia - Ostreida - Malleidae
Isognomon sp. Lightfoot 1786
1 specimen
Bivalvia - Pectinida - Neitheidae
2 specimens
Bivalvia - Mytilida - Mytilidae
3 specimens
Bivalvia - Arcida - Cucullaeidae
2 specimens
Bivalvia - Arcida - Parallelodontidae
Nemodon sp. Conrad 1869
1 specimen
Bivalvia - Arcida - Arcidae
2 specimens
Bivalvia - Pectinida - Plicatulidae
Plicatula sp. Lamarck 1801
1 specimen
see common names

Geography
Country:Japan
Coordinates: 33.5° North, 133.3° East (view map)
Paleocoordinates:40.6° North, 144.6° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Early Cretaceous
Stage: Aptian 10 m.y. bin: Cretaceous 3
Key time interval: Aptian
Age range of interval: 121.4 - 113.2 m.y. ago
Stratigraphy
Formation:Bunjo
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: lithified sandstone
Lithology description: medium-grained sandstone
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:69101
Authorizer:W. Kiessling Enterer:U. Merkel
Modifier:M. Manojlovic Research group:marine invertebrate
Created:2007-02-19 01:04:47 Last modified:2025-02-22 15:12:02
Access level:the public Released:2007-02-19 01:04:47
Creative Commons license:CC0
Reference information

Primary reference:
19920. M. Tashiro and T. Matsuda. 1986. Lower Cretaceous bivalves from the Sakawa area, Shikoku. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 142:366-392 [W. Kiessling/U. Merkel]