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- Title
Late Jurassic decapod crustaceans from northeast Japan.
- Authors
KATO, HISAYOSHI; TAKAHASHI, TOSHINOBU; TAIRA, MUNEO
- Abstract
Astacidean and thalassinidean macrurans ( Glyphea sp., ? Eryma sp. and Protaxius sp.) and a new longodromitid crab, Planoprosopon kashimaensis, are recorded from the Upper Jurassic (upper Kimmeridgian to lower Tithonian) of Fukushima Prefecture, northeast Japan. Material was collected from the Tatenosawa Sandstone Member of the Nakanosawa Formation, Somanakamura Group, from which abundant Tethyan-type marine invertebrates are known. Planoprosopon kashimaensis sp. nov. closely resembles P. heydeni (von Meyer), a common form in the Upper Jurassic of the Tethyan realm in Europe, and represents the oldest record of a brachyuran from the circum-Pacific region. Similarities to contemporaneous decapod assemblages in southern Germany indicate that closely comparable, parallel decapod faunas in the Tethyan realm, inclusive of brachyurans, had already been established in the western circum-Pacific region by the Late Jurassic.
- Subjects
GERMANY; EUROPE; FUKUSHIMA-ken (Japan); JAPAN; JURASSIC stratigraphic geology; JURASSIC paleoecology; FOSSIL invertebrates
- Publication
Palaeontology, 2010, Vol 53, Issue 4, p761
- ISSN
0031-0239
- Publication type
Article
- DOI
10.1111/j.1475-4983.2010.00960.x