Zuykov, M. A.; Terentiev, S. S.; Harper, D. A. (2008). New endemic brachiopod and echinoderm genera from the Upper Ordovician of the St. Petersburg region, northwestern Russia. GFF. 130(2): 87-93.

508361

10.1080/11035890801302087 [view]

Zuykov, M. A.; Terentiev, S. S.; Harper, D. A.

2008

130(2): 87-93

Publication

A new brachiopod and a rhombiferan cystoid are described from the Gryazno and Schundorovo formations (Upper Ordovician; middle Sandbian), Idavere Regional Stage, of the St. Petersburg Region (northwestern Russia). The fossils are part of an abundant, well-preserved benthic fauna. The rhynchonelliformean brachiopod Madiorthis alsami gen. et sp. nov. belongs to the family Plaesiomyidae (subfamily Plaesiomyinae); the dichoporite echinoderm Fusicystis magnificus gen. et sp. nov. is assigned to the family Echinoencrinitidae (subfamily Scoliocystinae). These new taxa have not been found outside the type locality.

Brachiopoda

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