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Shiranuka

Formation	Shiranuka
Age:	3.60 - 2.59 Ma Cenozoic
Interval	Early Pliocene
Lithology	sandstone/siltstone
Number of Collections	6
Number of Occurrences	21

Recorded Sample Locations

Location	Region	Stratigraphic Name
Atsunai Fm - AN-13	Kushiro Subprefecture, Hokkaidō Prefecture, Japan	Shiranuka
Shiranuka Fm - SNY-1	Primorsky Krai, Russia	Shiranuka
Shiranuka Formation - Kushiro coal field	Kushiro Subprefecture, Hokkaidō Prefecture, Japan	Shiranuka
Chokubetsu	Kushiro Subprefecture, Hokkaidō Prefecture, Japan	Shiranuka

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Atsunai	16.0 - 11.6 Ma Miocene	siltstone, sandstone/siltstone	32

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Odobenus sp. genus	6	Animalia : Chordata : Mammalia : Carnivora : Odobenidae : *Odobenus*	3.6 - 2.588 Ma Cenozoic
Clinocardium sp. genus	6	Animalia : Mollusca : Bivalvia : Cardiida : Cardiidae : *Clinocardium*	5.333 - 3.6 Ma Neogene
Macoma (Macoma) sp. subgenus	6.3	Animalia : Mollusca : Bivalvia : Cardiida : Tellinidae : Macoma : *Macoma (Macoma)*	5.333 - 3.6 Ma Neogene
Macoma (Macoma) calcarea species	7	Animalia : Mollusca : Bivalvia : Cardiida : Tellinidae : Macoma : *Macoma (Macoma) calcarea*	5.333 - 3.6 Ma Neogene
Nuculana sp. genus	6	Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : *Nuculana*	5.333 - 3.6 Ma Neogene
Nuculana (Nuculana) sp. subgenus	6.3	Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : Nuculana : *Nuculana (Nuculana)*	5.333 - 3.6 Ma Neogene
Portlandia sp. genus	6	Animalia : Mollusca : Bivalvia : *Portlandia*	5.333 - 3.6 Ma Neogene
Yoldia sp. genus	6	Animalia : Mollusca : Bivalvia : Nuculanida : Yoldiidae : *Yoldia*	5.333 - 3.6 Ma Neogene
Mya (Mya) sp. subgenus	6.3	Animalia : Mollusca : Bivalvia : Pholadida : Myidae : Mya : *Mya (Mya)*	5.333 - 3.6 Ma Neogene
Buccinidae family	5	Animalia : Mollusca : Gastropoda : Neogastropoda : Buccinidae	5.333 - 3.6 Ma Neogene
Makiyama sp. genus	6	Animalia : Porifera : Demospongea : Poecilosclerida : *Makiyama*	5.333 - 3.6 Ma Neogene

References

Sasa Y., Okazaki Y. (1967) Walrus fossils from the Pacific coast of Hokkaido, Commemorative Volume on 77th Anniversary of Prof. Ichiro Hayasaka, 181-184

Honda Y. (1988) Molluscan fossils from the Atsunai Group, Kushiro Coal Field, Eastern Hokkaido, Northern Japan, Sato Ho-on Kai Special Publication (Profesoor T. Kotaka Commemorartive Volume), 351-363

Honda Y. (1989) Paleogene molluscan faunas from the Kushiro Coal Field, Eastern Hokkaido, Tohoku University, Science Report, 2nd series 60 1, 1-137

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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