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References
Evolution of Aristotle's lantern
Description
Cidarids and diademataceans have teeth with an U-shaped cross section. Stirodont echinaceans evolved mechanically stronger t-shaped (or keeled) teeth evolved. In the camarodont echinaceans the plates of the jaw apparatus (pyramids) are connected by a bow (epiphysis), which further increases their strength. Cross sections of teeth are shown in solid black.
No scale.
Author
Schultz, Heinke
JPG file
- 136.82 kB
- 1 329 x 791 pixels
added on 2005-02-23
2 098 views
From reference
Schultz, H. (2006). Sea urchins: A guide to worldwide sha...
© 2005 Schultz, Heinke
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