Vertebrate Classes All in Chordate Phylum 1. All vertebrates have… Bilateral symmetry Bilateral symmetry Fully developed coelom with organs Fully developed.
Fishes. Classification of Fishes Three classes of vertebrates: Agnatha; Chondrichthyes; and Osteichthyes Fishes are the most numerous of all vertebrates.
18.16 Lampreys are vertebrates that lack hinged jaws –Lampreys represent the oldest living lineage of vertebrates Suspension feeders in freshwater streams.
Fish Families
