Modern Text Book of Zoology
Vertebrates
Ranked #100 in Zoology
1. Phylum Chordata: An Introduction PROTOCHORDATES2. Type 1. Balanoglossus: A Tongue Worm3. Subphylum I. Hemichardata4. Type 2. Herdmania: A Sea-Squirt5. Subphylum II. Urochordata6. Type 3. Branchiostoma (= Amphioxus): The Laneelet7. Subphylum III. Cephalochordata 8. Protochordata: General and Comparative SECTION IILOWER VERTEB ES9. Subphylum IV. Vertebrata10. Class 1. Ostracodermi (Extinct) 11. Type 4. Petromyzon: The Lamprey12. Class 2. Cyclostomata13. Class 3. Placodermi (Extinct)14. Type 5. Scoliodon: The Dogfish: A Cartilaginous Fish15. Class 4. Chondrichthyes: The Cartilaginous Fishes... more