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Reproductive Data for Conus pennaceus
egg diameter 460 um
reproductive season May-August
development hatch when 2 1/4 whorls complete at a columellar length of 1250-1300 um
occurrence 1) common in basaltic tidepools, such as at Kahuku and Nanakuli, Oahu; 2) Maili Point, Oahu
references 1) E. A. Kay in The Systematics of the Cypraeidae Elucidated by a Study of Cypraea caputserpentis and Related Forms, 1957; 2) J.B. Taylor in Planktonic Prosobranch Veligers of Kaneohe Bay, 1975

Phylogenetic Information
phylum Mollusca
class Gastropoda (subclass Prosobranchia)
order Neogastropoda
family Conidae
genus Conus
species pennaceus
reproduction method sexual