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Shiratake, Amakusa City, Kumamoto Prefecture, Japan

Formation	Shiratake
Age:	48.6 - 37.2 Ma Eocene
Interval	Middle Eocene
Lithology	sandstone
Number of Collections	5
Number of Occurrences	53

Recorded Sample Locations

Location	Region	Stratigraphic Name
Itchoda Fm - Amakusa	Amakusa City, Kumamoto Prefecture, Japan	Shiratake

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Kawamagari	37.2 - 33.9 Ma Paleogene	sandstone	10
Toishi	48.6 - 37.2 Ma Eocene	sandstone	2
Sakasegawa - Itchoda	37.2 - 33.9 Ma Paleogene	sandstone, "shale"	10
Sakasegawa - Sakasegawa	37.2 - 33.9 Ma Paleogene	siltstone	7

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Tellina (Tellinella) tricarinata species	7	Animalia : Mollusca : Bivalvia : Cardiida : Tellinidae : Tellina : *Tellina (Tellinella) tricarinata*	48.6 - 37.2 Ma Eocene
Venericardia sp. genus	6	Animalia : Mollusca : Bivalvia : Carditida : Carditidae : *Venericardia*	48.6 - 37.2 Ma Eocene
Venericardia (Venericardia) mandaica species	7	Animalia : Mollusca : Bivalvia : Carditida : Carditidae : Venericardia : *Venericardia (Venericardia) mandaica*	48.6 - 37.2 Ma Eocene
Venericardia (Venericor) nipponica species	7	Animalia : Mollusca : Bivalvia : Carditida : Carditidae : Venericardia : *Venericardia (Venericor) nipponica*	48.6 - 37.2 Ma Eocene
Crassatella sp. genus	6	Animalia : Mollusca : Bivalvia : Carditida : Crassatellidae : *Crassatella*	48.6 - 37.2 Ma Eocene
Lucinidae family	5	Animalia : Mollusca : Bivalvia : Lucinida : Lucinidae	48.6 - 37.2 Ma Eocene
Mytilus (Septifer) sp. subgenus	6.3	Animalia : Mollusca : Bivalvia : Mytilida : Mytilidae : Mytilus : *Mytilus (Septifer)*	48.6 - 37.2 Ma Eocene
Joannisiella sp. genus	6	Animalia : Mollusca : Bivalvia : Venerida : Ungulinidae : *Joannisiella*	48.6 - 37.2 Ma Eocene
Portlandia sp. genus	6	Animalia : Mollusca : Bivalvia : *Portlandia*	48.6 - 37.2 Ma Eocene
Yoldia sp. genus	6	Animalia : Mollusca : Bivalvia : Nuculanida : Yoldiidae : *Yoldia*	48.6 - 37.2 Ma Eocene
Caestocorbula subtumida species	7	Animalia : Mollusca : Bivalvia : Pholadida : Corbulidae : Caestocorbula : *Caestocorbula subtumida*	48.6 - 37.2 Ma Eocene
Lentidium sp. genus	6	Animalia : Mollusca : Bivalvia : Myida : Corbulidae : *Lentidium*	48.6 - 37.2 Ma Eocene
Solena sp. genus	6	Animalia : Mollusca : Bivalvia : Adapedonta : Solenidae : *Solena*	48.6 - 37.2 Ma Eocene
Callista (Microcallista) ariakensis species	7	Animalia : Mollusca : Bivalvia : Veneroidei : Veneridae : Callista : *Callista (Microcallista) ariakensis*	48.6 - 37.2 Ma Eocene
Pitar sp. genus	6	Animalia : Mollusca : Bivalvia : Venerida : Veneridae : *Pitar*	48.6 - 37.2 Ma Eocene
Pseudoneptunea sp. genus	6	Animalia : Mollusca : Gastropoda : Neogastropoda : Buccinidae : *Pseudoneptunea*	48.6 - 37.2 Ma Eocene
Sycostoma sp. genus	6	Animalia : Mollusca : Gastropoda : Neogastropoda : Melongenidae : *Sycostoma*	48.6 - 37.2 Ma Eocene
Pseudoperissolax sp. genus	6	Animalia : Mollusca : Gastropoda : Neogastropoda : Muricidae : *Pseudoperissolax*	48.6 - 37.2 Ma Eocene
Eopleurotoma sp. genus	6	Animalia : Mollusca : Gastropoda : Neogastropoda : Turridae : *Eopleurotoma*	48.6 - 37.2 Ma Eocene
Athleta (Volutospina) nishimurai species	7	Animalia : Mollusca : Gastropoda : Neogastropoda : Volutidae : Athleta : *Athleta (Volutospina) nishimurai*	48.6 - 37.2 Ma Eocene
Cerithiopsis sp. genus	6	Animalia : Mollusca : Gastropoda : Littorinimorpha : Cerithiopsidae : *Cerithiopsis*	48.6 - 37.2 Ma Eocene
Neverita eocenica species	7	Animalia : Mollusca : Gastropoda : Naticidae : Neverita : *Neverita eocenica*	48.6 - 37.2 Ma Eocene
Polinices (Lunatia) utoensis species	7	Animalia : Mollusca : Gastropoda : Naticidae : Lunatia : *Polinices (Lunatia) utoensis*	48.6 - 37.2 Ma Eocene
Nerita sp. genus	6	Animalia : Mollusca : Gastropoda : Cycloneritida : Neritidae : *Nerita*	48.6 - 37.2 Ma Eocene
Orthaulax japonicus species	7	Animalia : Mollusca : Gastropoda : Thersiteidae : Orthaulax : *Orthaulax japonicus*	48.6 - 37.2 Ma Eocene
Lischkeia sp. genus	6	Animalia : Mollusca : Gastropoda : Trochida : Trochidae : *Lischkeia*	48.6 - 37.2 Ma Eocene
Faunus sp. genus	6	Animalia : Mollusca : Gastropoda : Sorbeoconcha : Pachychilidae : *Faunus*	48.6 - 37.2 Ma Eocene
Faunus nipponicus species	7	Animalia : Mollusca : Gastropoda : Sorbeoconcha : Pachychilidae : Faunus : *Faunus nipponicus*	48.6 - 37.2 Ma Eocene
Vicarya sp. genus	6	Animalia : Mollusca : Gastropoda : Potamididae : *Vicarya*	48.6 - 37.2 Ma Eocene
Colpospira sp. genus	6	Animalia : Mollusca : Gastropoda : Turritellidae : *Colpospira*	48.6 - 37.2 Ma Eocene
Colpospira (Acutospira) tashiroi species	7	Animalia : Mollusca : Gastropoda : Sorbeoconcha : Turritellidae : Colpospira : *Colpospira (Acutospira) tashiroi*	48.6 - 37.2 Ma Eocene
Mesalia goshourensis species	7	Animalia : Mollusca : Gastropoda : Turritellidae : Mesalia : *Mesalia goshourensis*	48.6 - 37.2 Ma Eocene
Orectospira sp. genus	6	Animalia : Mollusca : Gastropoda : Turritellidae : *Orectospira*	48.6 - 37.2 Ma Eocene

References

Mizuno A. (1964) Paleogene and Early Neogene molluscan faunae in West Japan, Geological Survey of Japan Report 204

Matsubara T., Ugai H. (2006) Paleoecology and Taxonomy of Middle Eocene Molluscs from the Shiratake Formation on Takeshima lsland, Amakusa lslands, Southwest Japan, Goshoura Cretaceous Museum 7, 1-17

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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