Archive | Invertebrate Zoology

Onychophora: Anatomical Peculiarities, Affinities and Classification

In this article we will discuss about Onychophora:- 1. Anatomical Peculiarities of Onychophora 2. Affinities of Onychophora 3. Views regarding the Origin 4. Zoological Importance 5. Systematic Position 6. Classification 7. Fossil History.  Anatomical Peculiarities of Onychophora: A. Primitive features: 1. Onychophora are worm-like body covered with thin, flexible, chitinous cuticle. 2. Onychophora are sluggish in nature. 3. Head segments [...]

By |2016-05-27T11:32:22+00:00May 27, 2016|Onychophora|Comments Off on Onychophora: Anatomical Peculiarities, Affinities and Classification
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An Example of Phylum Phoronida: Phoronis

In this article we will discuss about Phoronis:- 1. Habit and Habitat of Phoronis 2. External Structures of Phoronis 3. Body Wall 4. Coelom 5. Digestive System 6. Circulatory System 7. Excretory System 8. Nervous System 9. Reproductive System 10. Development. Contents: Habit and Habitat of Phoronis External Structures of Phoronis Body Wall of Phoronis Coelom of Phoronis Digestive System [...]

By |2016-05-27T11:32:22+00:00May 27, 2016|Phylum Phoronida|Comments Off on An Example of Phylum Phoronida: Phoronis
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Phoronids: Taxonomic Retrospect, Features and Affinities

In this article we will discuss about Phoronids:- 1. Taxonomic Retrospect of Phoronids 2. Characteristic Features of Phoronids 3. Fossil History 4. Geographical Distribution 5. Affinities. Taxonomic Retrospect of Phoronids: 1. The phoronids constitute a very im­portant group amongst the lophophorate coelomates. The name of the group as Phoronida was first coined by Hatschek in 1888. 2. Another name, Phoronidea, [...]

By |2016-05-27T11:32:22+00:00May 27, 2016|Phylum Phoronida|Comments Off on Phoronids: Taxonomic Retrospect, Features and Affinities
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