2. Characteristics

• a. Fusiform body

• b. Heterocercal tail

• c. Ventral mouth

• d. Placoid scales

• e. Cartilaginous endoskeleton

• f. J-shaped stomach; spiral valve

• g. Two-chambered heart

• h. No swim bladder or operculum

• i. Internal fertilization

Previous slide

Next slide

Back to first slide

View graphic version