Lancelets and tunicates belong to which animal phylum?

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Which animal phylum shows radial symmetry?

Squids and snails belong to which animal phylum?

Lancelets and tunicates belong to which animal phylum?

Which animal phylum has members with unsegmented, cylindrical, worm-shaped bodies that are covered in a collagenous cuticle?

Which animal phylum shows radial symmetry?

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Which animal phylum has members with a notochord, dorsal-hollow nerve chord, pharyngeal gill slits, and a post anal tail present at some point during their life-cycle?

Which animal phylum has most members possessing mantle tissue that secretes a a shell of calcium carbonate?