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Re: CROCODYLOMORPH ENDOTHERMY
In a message dated 96-01-26 16:40:43 EST, pharrinj@PLU.edu (Nicholas J.
>Yes, but all of the secondaries mentioned above are well attested by
>fossils--except for the heart, of course. The croc heart, as I
>understand it, is essentially four-chambered, but there is a valve that
>can allow mixing of blood when the animal is submerged and therefore
That could well be a vestige of a developmental stage of the quadricameral
heart. The QH did not arise from the tricameral heart overnight.