Assertion: crustacean's adult form | /r/CapableOf | retain notochord
Facets:
Source sentences:
text: Lancelet (Cephalochrodata): tiny and transparent; fishlike in appearance; adult form retains dorsal nerve cord, notochord, and gill slits; lives half-buried in the sand, with head sticking out to filter plankton; has sexual reproduction (via separate sexes).