THE NEW GENUS COPELANDELLA FROM THE CARBONIFEROUS — THE YOUNGEST KNOWN BEYRICHIACEAN OSTRACODES |
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| Authors: | MARTIN J M BLESS HANSPETER JORDAN |
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| Institution: | Geologisch Bureau voor het Mijngehied, Heerlen (The Netherlands);Lehrstuhl für Paläontologie, Bergakademie Freiberg, Freiberg (DDR) |
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| Abstract: | A palaeocope ostracode with prominent cruminal dimorphism occurs in Lower Carboniferous strata of Nova Scotia and Ireland. It is believed to be the youngest representative of the Beyrichiidae Matthew 1886, a family hitherto only known from the Silurian and Devonian. Because of differences in lobation and adventral structures this ostracode is here assigned to the new genus Copelandelia. The occurrence of the type species Copelandelia novascotica in strata of comparable age (Viséan) in Nova Scotia and Ireland appears to add some support to the hypothesis that North America and Europe formed one supercontinent in the Paleozoic, since this species is assumed to have lived in a near-shore, or even a brackish or non-marine environment. |
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