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Fishes
Chapter 24
Diversity
Fossils of Early Vertebrates
Fossils of Early Vertebrates
Placoderms
Fossils of Early Vertebrates
Acanthodians
Fossils of Early Vertebrates
cartilaginous fishes: Class Chondrichthyes
Fossils of Early Vertebrates
bony fishes
ray & lobe
Agnathans
class Myxini,
the hagfishes
class Petromyzontida, the lampreys.
Class Myxini - Hagfish
Class Myxini - Hagfish
Class Myxini - Hagfish
Class Petromyzontida - Lampreys
Class Petromyzontida - Lampreys
Class Petromyzontida - Lampreys
Class Petromyzontida - Lampreys
Derived Characters of Gnathostomes
Fossil Gnathostomes
Fossil Gnathostomes
Class Chondrichthyes
Subclass Elasmobranchii
Subclass Elasmobranchii
Subclass Elasmobranchii
Subclass Elasmobranchii–
Acute Senses
Subclass Elasmobranchii
“mermaid’s purse”
Subclass Elasmobranchii
Subclass Elasmobranchii
Subclass Elasmobranchii
Subclass Elasmobranchii
Subclass Holocephali
Osteichthyes
Class Actinopterygii
Class Actinopterygii
Two main groups of ray-finned fishes. Chondrosteans
Class Actinopterygii
Neopterygians
Class Actinopterygii
Teleosts
Teleosts
Teleosts
Class Sarcopterygii
Class Sarcopterygii
Class Sarcopterygii
Locomotion in Water
Locomotion in Water
Buoyancy
Buoyancy
Buoyancy
Buoyancy: Physostomous fishes
1st method
Buoyancy: Physoclistous fishes
2nd Method
Hearing: Weberian ossicles
Respiration
Osmotic Regulation
Feeding Behavior
Feeding Behavior
Migration
Migration
Reproduction
Reproduction
Growth
Growth
French Angelfishes (Pomacanthus paru) juvenile (left) and adult (right).
Growth