Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 685
a. Portion of Halichondria (?) from Madagascar, with siliceousspicules projecting from the keratose network. B. Triradiate spicules of Grcmtia compressa, lying in the midst of itscytoblastema. simpler Sponges, such as Grcmtia, have no horny skeleton ; and theirspicules are imbedded in the general…
Microscopy · Biology
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