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If an animal has segments, bilateral symmetry, pharyngeal clefts, a post-anal tail, and deuterostomic development, it must be a member of the __________
Chordates
Lampreys have a cartilaginous tube around their notochord; they qualify as ______________
Vertabrates,
A Lancelet is a ___________ but not a ____________
Chordate; vertabrate
The formation of you ear can be contributed to what chordate characteristic....
Pharyngeal slits or clefts
Which chordate characteristic contributes most to suspension-feeding devices in many invertebrate chordates?
Gnathastomes
Jawed vertabrates
Examples are sharks, rays, turtles, tuna, pigeons
6 all responses correct
see front of card
7
missing hinged jaw in lamprey
Chordates derived traits
Dorsal,Hollow nerve cord
Notochord
Pharyngeal Slits or Clefts
Muscular Post Anal tails
Earliest known vertabrates
Conodonts lived 500 million years ago
had dental elements
Jawless
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