Bulletin of the Mizunami Fossil Museum Vol. 53, No. 1
New records for decapods from the Middle Miocene Sekinobana and Lower Pleistocene Onma formations, Ishikawa Prefecture, central Japan
- BMFM53-007Karasawa06（PDF 10.88MB）
- BMFM53-007Karasawa06_web（PDF 0.52MB）
Karasawa and Goda (2026) print-version
Karasawa and Goda (2026) small-version
Published: 2026/3/27 Page: 41–43
Two new brachyurans from the Miocene and Pleistocene deposits of Ishikawa Prefecture are re-ported. Macrocheira sp. (Macrocheiridae) is the first recorded from the Middle Miocene (Langhian) Sekinobana Formation. Euclosiana obtusifrons (De Haan), a leucosiid crab from the Lower Pleisto-cene (Calabrian) Onma Formation is the oldest fossil record in Japan. The carapace of E. obtusifrons has exceptionally preserved traces of color spots.