MolluscaBase taxon details
Opertochasma somaensis Haga & Kase, 2011 †
1480106 (urn:lsid:marinespecies.org:taxname:1480106)
accepted
Species
marine, brackish, fresh
fossil only
Haga, T.; Kase, T. (2011). Opertochasma somaensis n. sp. (Bivalvia: Pholadidae) from the Upper Jurassic in Japan: a perspective on pholadoidean early evolution. <em>Journal of Paleontology.</em> 85(3): 478-488., available online at https://doi.org/10.1666/10-008.1
page(s): 480, figs. 2-5 [details] Available for editors
[request]
page(s): 480, figs. 2-5 [details] Available for editors
[request]
Note Tatenosawa Sandstone Member of the Nakanosawa...
From editor or global species database
Type locality Tatenosawa Sandstone Member of the Nakanosawa Formation, Somanakamura Group, at Koike, Minami-soma City, Fukushima Prefecture, northern Japan [details]
Etymology Named after the Soma district, northeast part of Fukushima Prefecture, northeast Japan, where the materials were collected
Etymology Named after the Soma district, northeast part of Fukushima Prefecture, northeast Japan, where the materials were collected [details]
MolluscaBase eds. (2025). MolluscaBase. Opertochasma somaensis Haga & Kase, 2011 †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1480106 on 2025-09-12
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original description
Haga, T.; Kase, T. (2011). Opertochasma somaensis n. sp. (Bivalvia: Pholadidae) from the Upper Jurassic in Japan: a perspective on pholadoidean early evolution. <em>Journal of Paleontology.</em> 85(3): 478-488., available online at https://doi.org/10.1666/10-008.1
page(s): 480, figs. 2-5 [details] Available for editors [request]
page(s): 480, figs. 2-5 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Etymology Named after the Soma district, northeast part of Fukushima Prefecture, northeast Japan, where the materials were collected [details]Type locality Tatenosawa Sandstone Member of the Nakanosawa Formation, Somanakamura Group, at Koike, Minami-soma City, Fukushima Prefecture, northern Japan [details]
