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Unformatted text preview: cephalocordates No jaws Dorsal fin Myxonoidea : "hagfish" : has a "cranium"-Vertebral precursors Cartilaginous blocks along the dorsal midline No jaws Suck blood Filter feeder Marine & freshwater Breed once (salmon, lampreys) then semelparous Breed many years in a row (blue back herring, sturgeon) -iteroparous Anadromous Parasitic Petromyzontoidea: "lamprey"-petromyzontoidea Lecture 9.1 Monday, March 03, 2008 3:07 PM lecture 9.1 Page 1...
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This note was uploaded on 04/20/2008 for the course BIOL 94 taught by Professor Gaut/summers during the Winter '08 term at UC Irvine.
- Winter '08