In this article we will discuss about the modern concept on the phylogenetic status of cyclostomata. In this history of vertebrate evolution the cyclostomes occupy a doubtful status. Diverse opinions exist on the relative status of the cyclostomes in the vertebrate series. Cyclostomes are generally regarded to be lower in structural organisation than the fishes (Gnathostoma) but higher than Branchiostoma [...]
The upcoming discussion will update you about the difference between protopterus, lepidosiren and neoceratodus. Difference # Protopterus: 1. Distribution: Tropical Africa. 2. Habitat: Inhabits the river and large lakes. It aestivates when the river becomes completely dried up in summer. 3. Feeding habit: Carnivorous and eats the worms, crustaceans, insects, frogs and many other animals. It also feeds on its [...]
In this article we will discuss about Latimeria:- 1. History of Discovery of Latimeria 2. Fossils of Latimeria from India 3. External Structures 4. Skeletal Structures 5. Digestive System 6. Swim-Bladder 7. Respiratory System 8. Circulatory System 9. Nervous System 10. Urinogenital System 11. Zoological Importance. Contents: History of Discovery of Latimeria Fossils of Latimeria from India External Structures of [...]