Ks4001 - Miyako area [Tanohata Fm]: Late Aptian, Japan
collected by Kase
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Purpurinidae
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Purpuroidea sp.
Lycett 1848
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Gastropoda
- Trajanellidae
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Gastropoda
- Patellida
- Acmaeidae
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? Acmaea moshiensis n. sp.
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Gastropoda
- Neritidae
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Bivalvia
- Trigoniida
- Trigoniidae
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Nipponitrigonia kikuchiana
(Yokoyama 1891)
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| see common names | |||||||
Geography
| Country: | Japan |
| Coordinates: | 39.8° North, 142.0° East (view map) |
| Paleocoordinates: | 48.1° North, 151.3° East (Wright 2013) |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| 10 m.y. bin: | Cretaceous 2-3 | ||
| Key time interval: | Late Aptian | ||
| Age range of interval: | 119.57 - 113.2 m.y. ago |
Stratigraphy
| Formation: | Tanohata | ||||
| Local section: | Miyako area | Local bed: | 116 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Hiraiga Fm. AGE: Late Aptian; justification for age not reported in text. STRATIGRAPHIC POSITION: From the basal part of the Tanohata Fm; conglomerate 60 cm in thickness. | |||||
Lithology and environment
| Primary lithology: | lithified sandy,calcareous conglomerate |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Pebble-sized conglomerate about 60 cm in thickness; pebbles rounded and composed mainly of andesite and a small amount of chert, slate and sandstone; matrix consists of highly calcareous and ill-sorted sandstone. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Disassociated major elements: | many |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Collectors: | Kase |
| Collection method comments: COLLECTOR: T. Kase. REPOSITORY: Not stated in text. | |
| Taxonomic list comments:COVERAGE: Exhaustive for gastropods; other taxa (namely bivalves and foraminifera) often present. NOMENCLATURE: Authoritative publication, with relatively modern nomenclature, and species-resolution identifications. | |
Metadata
| Database number: | 91306 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | G. Palazzo | Research group: | marine invertebrate |
| Created: | 2009-09-14 12:47:14 | Last modified: | 2026-09-19 11:51:05 |
| Access level: | the public | Released: | 2009-09-14 12:47:14 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 30704. | T. Kase. 1984. Early Cretaceous marine and brackish-water Gastropoda from Japan 1-262 [A. Hendy/A. Hendy] |