Danilo Enrique Noreña Benítez
anfioxo 35
In Biology it is an invertebrate living being, considered the first step of vertebrates. Instead of spine it has a cartilaginous cord. It is shaped like an elongated fish and lives in shallow water and is often buried in the mud. It feeds on plankton. It is also called lancet, acranius or leptocardium. It belongs to the subphyle Cephalochordata (cephalocordates).
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