Classification of Kumagae and Nakazawa 2009
G. †Promyalina Kittl 1903
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†Promyalina putiatinensis Kiparisova 1938
†Promyalina schamarae Bittner 1899
G. †Unionites Wissman 1841
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†Unionites canalensis Catullo 1847
†Unionites fassaensis Wissmann 1841