Chordates are characterised by a rod-like notochord and a hollow nerve cord on the dorsal side of the gut, and pharynx being perforated with gill slits for respiration. Vertebrates have a vertebral column that replaces the notochord, cephalization of the nervous system, a ventral heart, a post-anal tail and division of the coelom into chambers.
The following chapters appear in this section. Click on the title to open.
- Books on Chordata
- Classification of Chordata
- Origin of Chordates
- Hemichordata
- Balanoglossus
- Urochordata – Herdmania
- Cephalochordata – Branchiostoma
- Metamorphosis
- Retrogressive Metamorphosis
- Classification of Pisces
- Scales in fishes
- Respiration in fishes
- Locomotion in fishes
- Migration in fishes
- Classification of Amphibia
- Origin of tetrapods
- Parental care in Amphibia
- Neoteny–Paedomorphosis & Paedogenesis
- Skull types in reptiles
- Classification & Adaptive Radiation in reptiles
- Origin of reptiles
- Status and affinities of Sphenodon
- Status of crocodiles
- Snakes of India
- Classification of birds
- Origin and evolution of birds
- Flight adaptation in birds
- Migration in birds
- Characteristics and classification of mammals
- Origin and evolution of mammals
- Egg-laying mammals
- Marsupial mammals
- American Marsupials
- Aquatic mammals
- Primates, diversity and social life
- Ancestry of Cow (Bos indicus)