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†Spirosigmoilinella Matsunaga 1955
urn:lsid:organismnames.com:name:374841
Microreference
49
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†Spirosigmoilinella Matsunaga 1955
Matsunaga 1955. Spirosigmoilinella, a new foraminiferal genus from the Miocene of Japan. Transactions Palaeontological Society of Japan NS, 18 1955: 49-50