Introduction to Vertebrates. Vertebrate Vocabulary Chapters 32 -35 Chordate vertebrate vertebra (712) agnathan (714) ectothermic (724) endothermic (724) primate (731) fish list the major characteristics of these animals amphibian list the major characteristics of these animalsBy kaspar
MARINE FISHES. THE FIRST VERTEBRATES. Oldest and simplest vertebrates Most abundant vertebrates Three groups of fishes Jawless fishes Cartilaginous fishes (Chondrichthyes) Bony fishes (Osteichthyes)By cruz-moore
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Class Chondrichthyes: cartilaginous fishes. The class Chondrichthyes has two subclasses: Elasmobranchii, which includes the sharks and rays. Holocephali: the chimaeras: ratfish and ghostfish. 16.1. 16.2. Class Chondrichthyes. Modern Chondricthyes include the sharks, rays and Chimeras.
Class Chondrichthyes: cartilaginous fishes. The class Chondrichthyes has two subclasses: Elasmobranchii, which includes the sharks and rays. Holocephali: the chimaeras: ratfish and ghostfish. . 16.1. 16.2. Class Chondrichthyes. Modern Chondricthyes include the sharks, rays and Chimeras.
Cartilaginous Fishes. Objectives: 1. know the characteristics of the jawless fishes 2. compare and contrast between reproductive modes of sharks 3. identify a variety of sensory adaptations of cartilaginous fishes. 4. differentiate between skates and rays.
Cartilaginous Fishes. Class Chondrichthyes. Cartilaginous Fishes. This group includes: sharks, rays, skates, and ratfishes. Characteristics of Cartilaginous Fishes. Have a skeleton made of cartilage (lighter and more flexible than bone).
Cartilaginous Fishes. Cartilaginous fishes ( Chondrichthyes) have a skeleton made not of bone, but of cartilage , which is lighter and more flexible than bone Cartilaginous fishes have well-developed jaws and paired fins for efficient swimming
Jawless and Cartilaginous Fishes. Jawless Fish. The only existing Jawless fish are hagfishes and lamprey Jawless fish’s skin has neither plates nor scales
CHORDATES: FISHES (JAWLESS, BONY AND CARTILAGINOUS CREATURES). Barbara Leary and Amy Vallis AP Biology Ms. Bergman April 8, 2011. BODY STRUCTURE AND COVERING. BONY FISH ( Teleosts ) Scales are flatter covered by thins layers of skin and mucus making them slippery
Class : Chondrichthyes(Cartilagenous fishes ) Sub Class:Elasmobranchii Order:Selachii Sub order:Selachoidea Eg:Shark. Class : Chondrichthyes Sub Class:Elasmobranchii Order:Selachii Sub order:Batoidea Eg: Rays. Class : Chondrichthyes( Ophisthonephric kidneys) Sub Class:II- Holocephali
Chondrichthyes. An Overview. Chondrichthyes. Are jawed cartilaginous fish composed of sharks, skates, and rays They have a skeleton made up of cartilage and do not have any bones They have existed on earth for over 400 million years
Chondrichthyes . Chondrichthyes or cartilaginous fishes are jawed fish with: 1)paired fins 2) paired nares 3) scales 4) two-chambered hearts 5) skeletons made of cartilage rather than bone. The class is divided into two subclasses: 1) Elasmobranchii (sharks, rays and skates)