ICTHYOLOGY - LAB 3 (JAWLESS FISHES)

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Description and Tags

Biology

Evolution

University/Undergrad

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9 Terms

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Conodonta
Extinct Jawless Fish

Cone-shaped teeth used for filtering or grasping

Anguilliform
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Pterapsidomorphi
Extinct Jawless Fish

Two nares

Heavily armored

Depressiform
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Anaspida
Extinct Jawless Fish

Without shield/no armor

Hypocercal tail

Fusiform
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Thelodonti
Extinct Jawless Fish

Hollow scales
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Osteostracomorphi
Extinct Jawless Fish

Bony shells
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Notochord

Dorsal hollow nerve cord

Pharyngeal slits

Postanal tail
Synapomorphies of Phylum Chordata
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Amphioxiformes
Lancelets (order)
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Myxiniformes
Hagfish (order)
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Petromyzontiformes
Lampreys (order)