Final answer:
The phylum that includes coelomate, bilaterian animals with a structure called a notochord is Chordata.
Step-by-step explanation:
The phylum that includes coelomate, bilaterian animals with a structure called a notochord is Chordata.
Chordata is a phylum that includes vertebrates and two invertebrate subphyla, the urochordates and the cephalochordates. These animals have a notochord, which is a flexible rod that provides support for the body.
Examples of chordates include humans, fish, birds, reptiles, and mammals.