Futaba Area, Ashizawa Formation, Honshu: Early/Lower Coniacian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Parallelodontidae
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Grammatodon (Nanonavis) sachalinensis
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| spelled with current rank as Nanonavis | ||||||||||
| subsp. sachalinensis | ||||||||||
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris (Glycymerita) amakusensis
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| original and current combination Glycymerita | ||||||||||
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus (Inoceramus) uwajimensis
Yehara 1924
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| synonym of Mytiloides stantoni | ||||||||||
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Bivalvia
- Ostreida
- Posidoniidae
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Didymotis akamatsui
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Bivalvia
- Pectinida
- Limidae
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Limatula sp.
Wood 1839
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Bivalvia
- Carditida
- Astartidae
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Opis (Opis) sp.
Defrance 1824
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Bivalvia
- Lucinida
- Lucinidae
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Myrtea ezoensis
(Nagao 1957)
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Bivalvia
- Trigoniida
- Trigoniidae
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Apiotrigonia (Apiotrigonia) minor
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Bivalvia
- Nuculanida
- Nuculanidae
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Jupiteria (Ezonuculana) mactraeformis
(Nagao 1932)
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Bivalvia
- Nuculida
- Nuculidae
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Acila (Truncacila) hokkaidoensis
(Nagao 1932)
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| see common names | ||||||||||
Geography
| Country: | Japan | State/province: | Fukushima |
| Coordinates: | 37.7° North, 141.0° East (view map) | ||
| Paleocoordinates: | 50.0° North, 131.6° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | local area |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Coniacian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Early/Lower Coniacian | ||
| Age range of interval: | 89.80000 - 86.30000 m.y. ago |
Lithology and environment
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | cast,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 39626 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | S. Nurnberg | Research group: | marine invertebrate |
| Subset of collection #: | 40168 | ||
| Created: | 2004-06-01 06:38:19 | Last modified: | 2004-06-28 08:01:03 |
| Access level: | the public | Released: | 2004-06-01 06:38:19 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 10664. | 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] |