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25 Cards in this Set
- Front
- Back
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Chordate |
bilateralsymmetry from the clade deuterostomia |
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Deuterostomia |
secondmouth |
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Myxinoidea |
hagfish |
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Petromyzontoidea |
lampreys |
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Elasmobranchii |
sharksand rays |
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Holocephali |
ratfish/ghostsharks |
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Actinopterygii |
rayfinned fish |
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Sarcopterygii |
lobe finned fish |
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Lissamphibia |
amphibians |
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Testudines |
turtles |
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Lepidosauria |
lizards,snakes and tuatara |
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Crocodilia |
crocodiles |
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Aves |
birds |
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Mammalia |
mammals |
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Vertebrae |
theseries of bones that make up the back bone |
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Common features of vertebrates: |
· Postnatal tail · Pharangeal pouches (evolved into gills/earstructures in higher chordates) · Vertebral column · Closed loop circulatory system · Myomeres |
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Craniates |
animalswhich have a head |
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Systematics |
studyof biology using phylogeny |
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Taxonomy |
thedescription, identification and classification of species |
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Nomenclature |
standardisednaming of taxa |
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Classification |
arrangementand hierarchy of taxa |
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Phylogeneticsystematics/cladistic |
shared derived character states constituteevidence of a common ancestor |
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Monophyletic |
consistof a common ancestor and all of its descendants |
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Paraphyletic |
consistsof a common ancestor and some but not all of its descendants |
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Polyphyletic |
consistsof a common ancestor and some of its descendants plus descendants from adifferent ancestor |
