The origin of the turtle shell: Mystery solved

[unable to retrieve full-text content]Biologists have finally solved the riddle of the origin of the turtle shell. By observing the development of different animal species and confirming their results with fossil analysis and genomic data, researchers show that the shell on the turtle's back derives only from its ancestors' ribcage and not from a combination of internal and external bone structures as is often thought.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/wf7SBAvUs94/130709094430.htm

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