#clydonautiloidea

Clydonautiloidea

Extinct superfamily of molluscs

The Clydonautiloidea are a superfamily within the nautiloid order Nautilida characterized by smooth, generally globular, shells with nearly straight sutures, in early forms, but developing highly differentiated sutures in some later forms. Where known, the siphuncle tends to be central to subcentral.

Mon 29th

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