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7 Cards in this Set
- Front
- Back
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ostracoderm |
A plated, jawless shell skinned |
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pteraspidomorphi |
wing formed, two olfactory bulbs. They are plated, marine/freshwater filter feeders. |
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anaspida |
small, hypocircal tails, compressed without shields. |
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thelodonti |
Nipple teeth, fusiform small, covered in scales and sediment filtering. |
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osteostracomorphi |
Two semicircular canals and evidence of true bone, armored fresh water setiment filtered. |
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placodermi |
10 cm to 10 m long, anterior plates, posterior naked, filter feeders to apex predators and slashing teeth. |
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acanthodii |
"Spiney sharks" 20 cm- 2 m long, they are fusaform and lacking armor. |
