Tag Archives | Class Chondrichthyes

Difference Between Chondrichthyes and Osteichthyes | Zoology

The upcoming discussion will update you about the differences between Chondrichthyes and Osteichthyes. Difference # Chondrichthyes: 1. The mouth is ventral in position. 2. The body is covered with minute and microscopic placoid scales, the skin is tough. 3. Paired pelvic fins are provided with claspers in males. 4. The tail is heterocercal, the vertebral column extending into the dorsal [...]

By Shriya S|2017-01-11T14:47:30+00:00January 11, 2017|Class Chondrichthyes|Comments Off

Classification of Class Chondrichthyes | Zoology

In this article we will discuss about the classification of class chondrichthyes. 1. The class includes sharks, rays and chimaeras. They are mostly predaceous and marine. 2. The skin is tough, possesses minute placoid scales and mucous glands. 3. Skeleton cartilaginous and notochord persistent. The vertebrae are complete and separate. 4. The median and paired fins are supported by cartilaginous [...]

By Shriya S|2017-01-11T14:47:30+00:00January 11, 2017|Class Chondrichthyes|Comments Off