lancelet(redirected from Atriopore)
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Related to Atriopore: amphioxus
Any of various small chordate marine organisms of the subphylum Cephalochordata, having a long thin body with a notochord but no cranium or vertebrae, and usually found buried in sand. Also called amphioxus, cephalochordate.
(Animals) any of several marine animals of the genus Branchiostoma (formerly Amphioxus), esp B. lanceolatus, that are closely related to the vertebrates: subphylum Cephalochordata (cephalochordates). Also called: amphioxus
[C19: referring to the slender shape]
lance•let(ˈlæns lɪt, ˈlɑns-)
any small, lancet-shaped burrowing marine animal of the subphylum Cephalochordata, having a notochord and numerous gill slits. Also called amphioxus.
Any of various small, transparent, fish-like animals that live in water and have a structure similar to that of vertebrates, but with a notochord instead of a true backbone. Lancelets are cephalochordates. Also called amphioxus.