ICTHYOLOGY - LAB 3 (JAWLESS FISHES)
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9 Terms
1
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Conodonta
Extinct Jawless Fish
Cone-shaped teeth used for filtering or grasping
Anguilliform
Cone-shaped teeth used for filtering or grasping
Anguilliform
2
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Pterapsidomorphi
Extinct Jawless Fish
Two nares
Heavily armored
Depressiform
Two nares
Heavily armored
Depressiform
3
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Anaspida
Extinct Jawless Fish
Without shield/no armor
Hypocercal tail
Fusiform
Without shield/no armor
Hypocercal tail
Fusiform
4
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Thelodonti
Extinct Jawless Fish
Hollow scales
Hollow scales
5
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Osteostracomorphi
Extinct Jawless Fish
Bony shells
Bony shells
6
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Notochord
Dorsal hollow nerve cord
Pharyngeal slits
Postanal tail
Dorsal hollow nerve cord
Pharyngeal slits
Postanal tail
Synapomorphies of Phylum Chordata
7
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Amphioxiformes
Lancelets (order)
8
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Myxiniformes
Hagfish (order)
9
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Petromyzontiformes
Lampreys (order)
Note 
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