Soft-sediment adaptations in a new Silurian gastropod from Central Asia

Volume / Part: 38 / 4
Publication Date: November 1995
Page(s): 831 - 842
Authored By: A. P. Gubanov, J. S. Peel and I. A. Pianovskaya

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Specimens of the gastropod Isfarispira septata gen. et sp. nov., from the Silurian of Central Asia, are characterized by a large, lenticular, multi-whorled shell with a flattened base, a low rate of expansion of the broad whorls, internal septa at intermediate growth stages and a prominent circumbilical flange which closed off much of the umbilicus. These morphological features reflect adaptation to life on a soft substratum, collectively serving to inhibit sinking into the soft sediment by increasing the area of the basal surface. I. septata is interpreted as a sedentary, or only infrequently mobile gastropod.

Palaeontology - Volume 38 Part 4 Pages 831-842

Palaeontology - Volume 38 Part 4 Pages 831-842

Citations

GUBANOV, A. P., PEEL, J. S., PIANOVSKAYA, I. A. 1995. Soft-sediment adaptations in a new Silurian gastropod from Central Asia. Palaeontology, 38, 4, 831–842.