Archive | Animals

Subphylum Vertebrate (Craniata) | Phylum Chordata

In this article we will discuss about Subphylum Vertebrate (Craniata):- 1. Introduction to Subphylum Vertebrate (Craniata) 2. Characters of Subphylum Vertebrata (Craniata) 3. Basic Features 4. Origin 5. Ancestry. Contents: Introduction to Subphylum Vertebrate (Craniata) Characters of Subphylum Vertebrata (Craniata) Basic Features of Subphylum Vertebrata (Craniata) Origin of Vertebrates Ancestry of Vertebrates 1. Introduction to Subphylum Vertebrate (Craniata): The vertebrates [...]

By |2016-07-22T08:09:50+00:00July 22, 2016|Phylum Chordata|Comments Off on Subphylum Vertebrate (Craniata) | Phylum Chordata
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Jawless Vertebrates: Historical Resume and Classification

In this article we will discuss about the historical resume and classification of jawless vertebrates. Historical Resume: L. Agassiz (1857) placed the agnaths under the class Myzontes and proposed the following scheme for the lampreys and hagfishes: Class I. Myzontes. Order 1. Myxinides and Order 2. Cyclostomi. E. S. Goodrich (1909) gave the following classification in his book "Cyclostomes and [...]

By |2016-07-22T08:09:50+00:00July 22, 2016|Phylum Chordata|Comments Off on Jawless Vertebrates: Historical Resume and Classification
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Hagfish: Structure, Affinities, System and Other Details

In this article we will discuss about Hagfish:- 1. Introduction to Hagfish 2. Habit and Habitat of Hagfish 3. External Structures 4. Digestive System 5. Respiratory System 6. Circulatory System 7. Nervous System 8. Excretory System 9. Reproductive System 10. Development 11. Affinities and Systematic Posi­tion. Contents: Introduction to Hagfish Habit and Habitat of Hagfish External Structures of Hagfish Digestive [...]

By |2016-07-22T08:09:50+00:00July 22, 2016|Phylum Chordata|Comments Off on Hagfish: Structure, Affinities, System and Other Details
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