Veliger larva is typical of
Veliger represents characteristic free-swimming planktotrophic larva of marine molluscs, directly derived from trochophore via development of expanded ciliated velum. It possesses two large ciliated lobes forming velum for swimming and particle capture, together with developing foot, mantle secreting protoconch, shell gland and visceral anlage. Commonly found in Gastropoda, Bivalvia and Scaphopoda, while Cephalopoda and many freshwater gastropods lost it through direct development with yolky eggs. Trochophore precedes veliger, connecting annelid-mollusc shared ancestry within Spiralia, indicat
Ref: NCERT Class 11 Biology, Chapter 4; Brusca & Brusca, Invertebrates, Chapter 16: Molluscan larvae