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†Eospyroceras Shimizu & Obata 1935
urn:lsid:organismnames.com:name:3188999
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†Eospyroceras Shimizu & Obata 1935
Shimizu & Obata 1935. New genera of Gotlandian and Ordovician Nautiloids. Journal of the Shanghai Science Institute (2), 2(1) 1935: pp. 1-10