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25 Cards in this Set
- Front
- Back
Osteichthyes |
The bony fishes, broken into two groups because of how vast the group is. |
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Sarcopterygian |
Fleshy-finned fishes |
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Actinopterygian |
Ray-finned fishes |
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Devonian |
(416-359 mya) Age of the Fishes |
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Actinistian |
Group of sarcopterygian, contains ceolocanths.
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Ceolocanth |
Under group actinistian, two extant species in western indian ocean and central indonesia. |
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Dipnoan (lungfish) |
Sarcopterygii: 6 extant species, because of close relationship with tetrapods their role is significant in evolution. |
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Aestivation |
A period of prolonged sleep, often used during summer and dry seasons, drought. |
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Neopterygian |
Of the actinopterygii includes the Acentrophus and Leptolepis. |
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Basal Osteichthyes |
Less derived of the bony fish, include Osteolepis, Moythomasia, and Dipterus |
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Osteolepis |
Early osteichthyes, important sarcopterygii, sister to tetrapods |
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Moythomasia |
Early actinopterygii. |
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Acentrophus |
Neopterygii, early member of late Paleozoic radiation |
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Leptolepsis |
Neopterygii, early jurassic teleost |
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Paleoniscoid |
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Teleostem |
Has an extra set of derived characteristics. Most extant fishes fall in this group. Most are eutelostei. |
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Euteleostei |
Largest sub group in the teleostem, most extant fishes are in this group. Broken into two smaller groups, the ostariophsi and the salmoniforms. |
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Bichir |
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Bowfin |
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Gar |
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Sturgeon |
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Perch |
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Rhipidisteans |
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Osteolepiform |
Highly diverse, extinct, sarcopterygian, peak in devonian period |
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Operculum |
Gill covering |