Regeneration of some brachiopod shells

Krzysztof Małkowski


Traces of regenerated damages are displayed by some shells of terebratuloid brachiopods, Cancinithyris biplicata (Sowerby) from the Albian of Annopol-on-Vistula. Two main types of regeneration are distinguished: one, involving concentrical accretion of new shelly matter, and another, in which regenerating layer is simultaneously accreted on both sides of a damage, and forms a regenerational suture: the regenerational of the transitional type is also possible.

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