Finer sculptures in euthecosomatous shells, and their value for taxonomy (Mollusca, Pteropoda)
Beaufortia , Volume 24 - Issue 314 p. 105- 121
The protoconch in Limacina helicoides, Peraclis moluccensis, Styliola subula, Cavolinia globulosa, C. gibbosa, C. inflexa and C. longirostris are described; finer structures of the shell in these species and Hyalocylis striata, Diacra quadridentata and Cavolinia tridentata are described. The occurrence of a distinct protoconch-I and -II in Cavoliniidae is discussed as well as the taxonomic value of the structure of the ventral ribs in the Cavoliniidae mentioned.
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van der Spoel, S. (1976). Finer sculptures in euthecosomatous shells, and their value for taxonomy (Mollusca, Pteropoda). Beaufortia, 24(314), 105–121.