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!Fishes 2
Bony Fishes: Osteichthyes: Class Sarcopterygii
4
Biology
Undergraduate 4
11/11/2009

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Term
sarcopterygii
Definition
lobe-finned fishes
Term
evolutionary history
Definition
originated in devonian; highest diversity of aquatic forms found in late Paleozoic and Mesozoic
Term
fins
Definition
lobed, bony leg-like supporters; 3-tetrapod like skeleton of limbs
Term
cosmine
Definition
in bones and scales; enamel, chemical make-up of scale, primitive
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