life evolves! what is life? what is evolution? evidence for evolution testing evolutionary...
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What is Life?
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Homology homologous structure of mammal limbs suggest descent from a common ancestor
(Buffon, 1707-1788)
See also Fig. 22.17
Testing predictions from evolutionary theory:are tetrapod limbs homologous?
University of California Museum of Paleontology (http://evolution.berkeley.edu)
Fossil ancestral tetrapods have same limb structure
University of California Museum of Paleontology (http://evolution.berkeley.edu)
Meet Ichthyostega 363 Mya
http://download.naturkundemuseum-berlin.de/presse/Darwin/Stuttgart/Fossil_Sclerocephalus.jpg
And lobe-finned fish have similar bone structure
390 mya
University of California Museum of Paleontology (http://evolution.berkeley.edu)