Kattachi, Omuta City (Eocene of Japan)

Where: Fukuoka, Japan (33.0° N, 130.5° E: paleocoordinates 40.4° N, 124.0° E)

• coordinate stated in text

When: CP13c nannofossil zone, Kattachi Formation (Manda Group), Lutetian (47.8 - 41.3 Ma)

• Okinoshiman stage. Former Kattachi Formation (upper part of the Miike Formation of Iguchi, 2016) belongs to the uppermost CP13c nannofossil zone and lower CP14a, corresponding to the upper Lutetian (Iguchi, 2016). The site represents the lowermost sandstone of the Kattachi Formation (Karasawa, 1992), the "Kattachi fossil zone" of Kikuchi (1963).

• group of beds-level stratigraphic resolution

Environment/lithology: shoreface; lithified, medium-grained, coarse, glauconitic sandstone

• Lithology and association with coal suggests very shallow environment.
• The uppermost Miike Formation (Kattachi Formation of Kikuchi 1963) is composed of sandstone, occasionally glauconitic, and shale/sandy shale, with coal and coaly shales. Coarse to medium-grained sandstone, according to Karasawa (1993). Coarse-grained glauconitic sandstone with greenish grey calcareous sandstone in Kuroda & Urata (1964). Appears lithified from illustrated decapod specimens.

Size class: macrofossils

Primary reference: Y. Yabumoto. 1989. A new Eocene lamnoid shark, Carcharodon nodai, from Omuta in northern Kyushu, Japan. Bulletin of the Kitakyushu Museum of Natural History 9:111-116 [M. Uhen/B. Shipps/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 168601: authorized by Mark Uhen, entered by Carlos Peredo on 26.04.2015, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Nautilida - Aturiidae
Aturia matsushitai Kobayashi 1956 nautiloid
"Aturia nagaoi" = Aturia yokoyamai Nagao 1926 nautiloid
Gastropoda
 Pleurotomarioidea - Pleurotomariidae
 Neogastropoda - Fasciolariidae
Bivalvia
 Carditida - Carditidae
"Venericardia nipponica" = Venericardia (Venericor) nipponica Yokoyama 1911 clam
 Carditida - Crassatellidae
"Crassatellites fuscus" = Crassatella fusca
"Crassatellites fuscus" = Crassatella fusca Yokoyama 1911 clam
Malacostraca
 Decapoda - Callianassidae
Eucalliax yoshihiroi n. sp. Karasawa 1992 decapod
 Decapoda - Mathildellidae
Branchioplax pentagonalis Yokoyama 1911 crab
 Decapoda - Macropipidae
Portunites kattachiensis n. sp. Karasawa 1992 crab
 Decapoda - Raninidae
Raninoides nodai n. sp. Karasawa 1992 crab
 Decapoda - Homolidae
Prohomola japonica n. gen. Yokoyama 1911 crab
Chondrichthyes
 Lamniformes - Lamnidae
Carcharodon nodai n. sp. Yabumoto 1989 white shark
 Lamniformes - Mitsukurinidae
Striatolamia macrota Agassiz 1838 goblin shark