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rusanu · 2016-08-22 · Original thread
For anyone interested in the (broader) subject there is a surprisingly readable book on the topic: Gaining Ground: The Origin and Evolution of Tetrapods [0]

Interestingly enough, in this book I've learned about yet another meaning of the term 'process' (ie. a prominence or projection, as from a bone), when I realized what it means in the context I had to go back some 20 pages and read again :)

[0] https://www.amazon.com/Gaining-Ground-Second-Evolution-Tetra...

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