Toyoda Area, Higashinagano Formation, Honshu: Sinemurian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Cardiida
- Cardiidae
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Protocardia (Protocardia) onoi
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? Cardium naganoense
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Bivalvia
- Lucinida
- Lucinidae
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Luciniola hasei
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Sphaeriola nipponica
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Bivalvia
- Carditida
- Cardiniidae
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Cardinia orientalis
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Cardinia toriyamai
Hayami 1958
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Bivalvia
- Carditida
- Astartidae
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Praeconia cf. tetragona
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Bivalvia
- Carditida
- Carditidae
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Tutcheria itoi
Hayami 1969
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Bivalvia
- Trigoniida
- Prosogyrotrigoniidae
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Prosogyrotrigonia inouyei
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| original and current combination Trigonia (Prosogyrotrigonia) | ||||||||||
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Bivalvia
- Pectinida
- Plicatulidae
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Plicatula praenipponica
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Plicatula subcircularis
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Bivalvia
- Pectinida
- Oxytomidae
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Oxytoma (Oxytoma) kobayashii
Hayami 1959
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Oxytoma (Oxytoma) inequivalvis
(Sowerby 1819)
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| recombined as Oxytoma inequivalvis | ||||||||||
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Oxytoma (Palmoxytoma) cf. cygnipes
(Young and Bird 1822)
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Meleagrinella japonica
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Bivalvia
- Pectinida
- Limidae
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Antiquilima nagatoensis
Hayami 1959
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| recombined as Antiquilima (Antiquilima) nagatoensis | ||||||||||
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Plagiostoma kobayashii
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Plagiostoma matsumotoi
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Ctenostreon japonicum
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Bivalvia
- Pectinida
- Pectinidae
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Chlamys textoria
(Schlotheim 1820)
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? Aequipecten toyorensis
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Bivalvia
- Pectinida
- Entoliidae
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Entolium cf. calvum
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| = Camptonectes | ||||||||||
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Entolium cf. lunare
(Roemer 1839)
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| = corneolum | ||||||||||
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Bivalvia
- Ostreida
- Gryphaeidae
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Liostrea toyorensis
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Bivalvia
- Ostreida
- Ostreidae
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Lopha (Actinostreon) sazanami
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Bivalvia
- Arcida
- Parallelodontidae
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Grammatodon (Grammatodon) toyorensis
Hayami 1959
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Parallelodon (Cosmetodon) infraliassicus
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Parallelodon (? Palaeocucullaea) subnavicellus
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Bivalvia
- Mytilida
- Mytilidae
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Modiolus magatama
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Bivalvia
- Nuculanida
- Nuculanidae
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Nuculana (Dacryomya) toriyamae
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| see common names | ||||||||||
Geography
| Country: | Japan | State/province: | Yamaguchi |
| Coordinates: | 34.2° North, 131.0° East (view map) | ||
| Paleocoordinates: | 47.2° North, 139.6° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | local area |
Time
| Period: | Jurassic | Epoch: | Early/Lower Jurassic |
| Stage: | Sinemurian | 10 m.y. bin: | Jurassic 1 |
| Key time interval: | Sinemurian | ||
| Age range of interval: | 199.50000 - 192.90000 m.y. ago |
Stratigraphy
| Geological group: | Toyora | Formation: | Higashinagano |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | sandy "shale" |
| Secondary lithology: | fine sandstone |
| 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: | 40560 | ||
| Authorizer: | M. Aberhan | Enterer: | S. Nurnberg |
| Modifier: | S. Nurnberg | Research group: | marine invertebrate |
| Created: | 2004-06-25 06:34:48 | Last modified: | 2004-06-29 15:34:49 |
| Access level: | the public | Released: | 2004-06-25 06:34:48 |
| 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] |