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Uonuma, Niigata Prefecture, Japan

Group	Uonuma
Age:	2.59 - 0.78 Ma Pleistocene
Interval	Early Pleistocene
Lithology	sandstone
Number of Collections	2
Number of Occurrences	26

Recorded Sample Locations

Location	Region	Stratigraphic Name
Izumozaki	Niigata Prefecture, Japan	Uonuma
Nobe River	Niigata Prefecture, Japan	Uonuma

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Glyptostrobus sp. genus	6	Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : *Glyptostrobus*	3.6 - 2.588 Ma Cenozoic
Metasequoia disticha species	7	Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Metasequoia : *Metasequoia disticha*	3.6 - 2.588 Ma Cenozoic
Juglans sp. genus	6	Plantae : Tracheophyta : Magnoliopsida : Fagales : Juglandaceae : *Juglans*	3.6 - 2.588 Ma Cenozoic
Liquidambar sp. genus	6	Plantae : Tracheophyta : Magnoliopsida : Saxifragales : Altingiaceae : *Liquidambar*	3.6 - 2.588 Ma Cenozoic
Eumetopias sp. genus	6	Animalia : Chordata : Mammalia : Carnivora : Otariidae : *Eumetopias*	3.6 - 2.588 Ma Cenozoic
Mesoplodon sp. genus	6	Animalia : Chordata : Mammalia : Cetacea : Hyperoodontidae : *Mesoplodon*	2.588 - 0.781 Ma Pleistocene
Anadara sp. genus	6	Animalia : Mollusca : Bivalvia : Arcida : Arcidae : *Anadara*	3.6 - 2.588 Ma Cenozoic
Glycymeris sp. genus	6	Animalia : Mollusca : Bivalvia : Arcida : Glycymerididae : *Glycymeris*	3.6 - 2.588 Ma Cenozoic
Clinocardium (Keenocardium) californiense species	7	Animalia : Mollusca : Bivalvia : Cardiida : Cardiidae : Clinocardium : *Clinocardium (Keenocardium) californiense*	3.6 - 2.588 Ma Cenozoic
Macoma (Macoma) calcarea species	7	Animalia : Mollusca : Bivalvia : Cardiida : Tellinidae : Macoma : *Macoma (Macoma) calcarea*	3.6 - 2.588 Ma Cenozoic
Lucinoma annulatum species	7	Animalia : Mollusca : Bivalvia : Lucinida : Lucinidae : Lucinoma : *Lucinoma annulatum*	3.6 - 2.588 Ma Cenozoic
Conchocele conradii species	7	Animalia : Mollusca : Bivalvia : Lucinida : Thyasiridae : Conchocele : *Conchocele conradii*	3.6 - 2.588 Ma Cenozoic
Modiolus sp. genus	6	Animalia : Mollusca : Bivalvia : Mytilida : Mytilidae : *Modiolus*	3.6 - 2.588 Ma Cenozoic
Yoldia sp. genus	6	Animalia : Mollusca : Bivalvia : Nuculanida : Yoldiidae : *Yoldia*	3.6 - 2.588 Ma Cenozoic
Acila (Truncacila) sp. subgenus	6.3	Animalia : Mollusca : Bivalvia : Nuculida : Nuculidae : Acila : *Acila (Truncacila)*	3.6 - 2.588 Ma Cenozoic
Mizuhopecten yessoensis species	7	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Mizuhopecten : *Mizuhopecten yessoensis*	3.6 - 2.588 Ma Cenozoic
Mya (Arenomya) arenaria species	7	Animalia : Mollusca : Bivalvia : Pholadida : Myidae : Mya : *Mya (Arenomya) arenaria*	3.6 - 2.588 Ma Cenozoic
Mercenaria sp. genus	6	Animalia : Mollusca : Bivalvia : Venerida : Veneridae : *Mercenaria*	3.6 - 2.588 Ma Cenozoic
Mohnia sp. genus	6	Animalia : Mollusca : Gastropoda : Neogastropoda : Buccinidae : *Mohnia*	3.6 - 2.588 Ma Cenozoic
Tectonatica sp. genus	6	Animalia : Mollusca : Gastropoda : Littorinimorpha : Naticidae : *Tectonatica*	3.6 - 2.588 Ma Cenozoic
Umbonium sp. genus	6	Animalia : Mollusca : Gastropoda : Trochidae : *Umbonium*	3.6 - 2.588 Ma Cenozoic
Turritella sp. genus	6	Animalia : Mollusca : Gastropoda : Turritellidae : *Turritella*	3.6 - 2.588 Ma Cenozoic
Buliminella sp. genus	6	Chromista : Foraminifera : Globothalamea : Rotaliida : Buliminellidae : *Buliminella*	3.6 - 2.588 Ma Cenozoic
Elphidium sp. genus	6	Chromista : Foraminifera : Globothalamea : Rotaliida : Elphidiidae : *Elphidium*	3.6 - 2.588 Ma Cenozoic
Bucella sp. genus	6	Foraminifera : *Bucella*	3.6 - 2.588 Ma Cenozoic

References

Horikawa H. (1981) On a new fossil sea-lion from the Uonuma Group (Plio-Pleistocene), Ojiya, Niigata Prefecture, Central Japan, Chikyu kagaku 35, 159-178

Oishi M., Hasegawa Y. (1995) A list of fossil cetaceans in Japan, The Island Arc 3, 493-505

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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