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5d93dfbf38d16d63397de01dcc5fa1c4

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Spyroceras Hyatt, 1884

Source

Rank

genus

Names

1

species:4622125

Proc. Boston Soc. nat. Hist. , 22, 276.

Classification

Pseudorthoceratidae Flower & Caster, 1935
- Spyroceras Hyatt, 1884