MolluscaBase name details
Cyclocardia (Cyclocardia) expansa (H. Takeda, 1953) †
1546818 (urn:lsid:marinespecies.org:taxname:1546818)
alternative representation
Species
Cyclocardia (Cyclocardia) Conrad, 1867 represented as Cyclocardia Conrad, 1867
marine, brackish, fresh, terrestrial
fossil only
(of Venericardia expansa H. Takeda, 1953 †) Takeda, H. (1953). The Poronai Formation (Oligocene Tertiary) of Hokkaido and south Sakhalin and its fossil fauna. <em>Hokkaido Association of Coal Mining Technologists, Studies on Coal Geology.</em> 3: 1-103, pls. 1-13.
page(s): 77, pl. 8, figs. 15-17, 19-21; pl. 11, fig. 13; pl. 12, figs. 1, 2, 4, 5, 7, 8, 10-12, 14-16, 18, 19, 22, 23, 25 [details]
page(s): 77, pl. 8, figs. 15-17, 19-21; pl. 11, fig. 13; pl. 12, figs. 1, 2, 4, 5, 7, 8, 10-12, 14-16, 18, 19, 22, 23, 25 [details]
MolluscaBase eds. (2025). MolluscaBase. Cyclocardia (Cyclocardia) expansa (H. Takeda, 1953) †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1546818 on 2025-09-11
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original description
(of Venericardia expansa H. Takeda, 1953 †) Takeda, H. (1953). The Poronai Formation (Oligocene Tertiary) of Hokkaido and south Sakhalin and its fossil fauna. <em>Hokkaido Association of Coal Mining Technologists, Studies on Coal Geology.</em> 3: 1-103, pls. 1-13.
page(s): 77, pl. 8, figs. 15-17, 19-21; pl. 11, fig. 13; pl. 12, figs. 1, 2, 4, 5, 7, 8, 10-12, 14-16, 18, 19, 22, 23, 25 [details]
basis of record Volobueva V.I. (1986). Bivalve mollusks of the Oligocene of the eastern part of the Koryak Upland [= Двустворчатые моллюски олигоцена восточной части Корякского нагорья]. <em>Paleogene-Neogene bivalves of the Far East and Eastern Paratethys: A collection of scientific papers [= Палеоген-неогеновые двустворчатые моллюски Дальнего Востока и Восточного Паратетиса: Сборник научных трудов].</em> pp. 65-74.
page(s): pl. I, figs. 15, 16 [details]
page(s): 77, pl. 8, figs. 15-17, 19-21; pl. 11, fig. 13; pl. 12, figs. 1, 2, 4, 5, 7, 8, 10-12, 14-16, 18, 19, 22, 23, 25 [details]
basis of record Volobueva V.I. (1986). Bivalve mollusks of the Oligocene of the eastern part of the Koryak Upland [= Двустворчатые моллюски олигоцена восточной части Корякского нагорья]. <em>Paleogene-Neogene bivalves of the Far East and Eastern Paratethys: A collection of scientific papers [= Палеоген-неогеновые двустворчатые моллюски Дальнего Востока и Восточного Паратетиса: Сборник научных трудов].</em> pp. 65-74.
page(s): pl. I, figs. 15, 16 [details]
