PBDB Collection

First formation (TO-1) (Cretaceous of Japan)

Where: Fukuoka, Japan (33.8° N, 130.9° E: paleocoordinates 41.1° N, 132.6° E)

• coordinate stated in text

When: First Formation (Wakino Group), Neocomian (145.0 - 125.8 Ma)

• The first formation (the lower formation W1) correlates to the Sengoku Formation. The formation is distributed along the Murasaki River in Kokuraminami-ku.

Environment/lithology: terrestrial; lithified conglomerate and lithified shale

• The basal part consists of a conglomerate of limestone, chert and others. The conglomerate involves large pebbles. There is a limestone conglomerate about 50m from the base. Most conglomerates are breccia and the pebbles are small in size. The main part is composed of abundant conglomerate and green-gray sandstone in the area along the Murasaki River. The upper part consists of alternating black sandstone and black sandy shale along the Murasaki River.

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•Fish fossils are found in green-gray shale and yellowish-gray shale of three horizons in the main part at Tokuriki

Size class: macrofossils

Preservation: adpression

Collection methods: chemical, peel or thin section

• All fossil specimens used in the present study are deposited in the Kitakyushu Museum and Institute of Natural History (NMNH)

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•Some specimens were immersed in a bath of 20% HCl and 80% water in 24-48 hours to etch their bones. Latex peels were made from the etched fossils for observation.

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•The outline of large specimens were drawn by tracing the enlarged positive films and detailed drawings were made with a binocular microscope.

Primary reference: Y. Yabumoto. 1994. Early Cretaceous freshwater fish fauna in Kyushu, Japan. Bulletin of the Kitakyushu Museum of Natural History 13:107-254 [M. Bell/M. Bell]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 145243: authorized by Mark Bell, entered by Mark Bell on 30.05.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Actinopteri
Osteoglossiformes - Lycopteridae	Aokiichthys sp., Aokiichthys otai n. sp., Aokiichthys praedorsalis n. sp., Aokiichthys uyenoi n. sp., Aokiichthys toriyamai n. gen. n. sp., Aokiichthys changae n. sp. Aokiichthys sp. Yabumoto 1994 KMNH VP 100,159 Aokiichthys otai n. sp. Yabumoto 1994 holotype: KMNH VP 100,173; paratypes174-175 Aokiichthys praedorsalis n. sp. Yabumoto 1994 holotype: KMNH VP 100,155; paratypes: 156-158 Aokiichthys uyenoi n. sp. Yabumoto 1994 holotype: KMNH VP 100,176; paratypes: 177-182 Aokiichthys toriyamai n. gen. n. sp. Yabumoto 1994 holotype: KMNH VP 100,160, paratypes: 162-165 Aokiichthys changae n. sp. Yabumoto 1994 holotype: KMNH VP 100,166; paratype: 100,167
Ichthyodectiformes -	Chuhsiungichthys yanagidai n. sp. Chuhsiungichthys yanagidai n. sp. Yabumoto 1994 holotype: KMNH VP 100,148, paratype: 100,149
Amiiformes - Amiidae	Nipponamia satoi n. gen. n. sp. Nipponamia satoi n. gen. n. sp. Yabumoto 1994 bowfin holotype: KMNH VP 100,147
Lepisosteiformes -	Lepidotes macropterus n. sp. Lepidotes macropterus n. sp. Yabumoto 1994 gar holotype: KMNH VP 100,146
Gastropoda
Cerithioidea - Thiaridae	Brotiopsis wakinoensis Brotiopsis wakinoensis snail
Bivalvia
Unionida - Unionidae	Plicatounio naktongensis Plicatounio naktongensis Kobayashi and Suzuki 1936 freshwater mussel sub species naktongensis