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
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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
Actinopteri | |
Aokiichthys sp., Aokiichthys uyenoi n. sp., Aokiichthys otai n. sp., Aokiichthys changae n. sp., Aokiichthys praedorsalis n. sp., Aokiichthys toriyamai n. gen. n. sp.
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Chuhsiungichthys yanagidai n. sp.
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Lepidotes macropterus n. sp.
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Nipponamia satoi n. gen. n. sp.
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Gastropoda | |
Brotiopsis wakinoensis snail | |
Bivalvia | |
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