a3875dc0f8c5f1a79b5563d604094443

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Sphaerorthoceras Ristedt, 1968

Source

Rank

genus

Names

1

in Clausen, Palaeontographica (A) 128: 27. Ristedt 1969, Abh. math. -naturw. Kl. Akad. Wiss. Mainz 1968: 250.