Elasmobranchs - sharks (360 species in two major groups), skates and rays (450 species) ... Sharks as predators: locate prey in a geographic sense. detect prey ...
They are names that are used for convenience in discussing vertebrate evolution. ... Salientia (Anura) 'Frogs' Urodela (Caudata) 'Salamanders' Tetrapoda: Amniota ...
some anadromous. some 'parasitic' micropredators. paired-species. Class Petromyzontida ... Class Chondrichthyes divided into two subclasses. Holocephali and ...
Notochord extending from head region into tail (no vertebral column) ... Small tail fin with fin rays. Large eyes. Small size only about 40 mm long ...
Lab 2 Fish Evolution and Wisconsin Fish Families Lecture Major taxonomic groups Functional and anatomical evolution Nomenclature Lab Compare traits of families