Archive | Zoology

Classification of Cetaceans | Aquatic Mammals

Division of the Order: Suborder (i) Archaeoceti: This suborder includes primitive or first whales, the fossil forms of which have been found in the sedi­ments of mideocene. They were large attaining a length of about 18.25 cm. The tail was very long. The forelimbs were modified into paddles. The hind limbs were ill-developed. The skull was more primi­tive than that [...]

By |2016-07-22T08:09:00+00:00July 22, 2016|Mammals|Comments Off on Classification of Cetaceans | Aquatic Mammals
Read More

Dipnoi: Distribution, Morphology and Affinities | Bony Fishes

In this article we will discuss about Dipnoi:- 1. Structure of Dipnoi 2. Distribution of Dipnoi 3. Morphology 4. Affinities. Structure of Dipnoi: Dipnoi (Gr. di-two, pnoe-breathing) is a small order of fresh water bony fishes. They respire by gills and lungs. Dipnoi evolved during Devonian period. They are characterized by short jaws, crushing plate from teeth, internal nares, reduced [...]

By |2016-06-02T03:49:10+00:00June 2, 2016|Zoology|Comments Off on Dipnoi: Distribution, Morphology and Affinities | Bony Fishes
Read More
Go to Top