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Re: they keep on growing despite early fusion



In a nutshell, Jessica Maisano found early fusion of many skeletal
elements, yet major growth continued in certain squamates.

But did she find the opposite -- lack of fusion in individuals that had stopped growing significantly? The abstract mentions this for the braincase of iguanians, but complete fusion of the braincase is pretty extreme anyway -- not many taxa ever do that.


Also note that nothing is said about histological criteria, including external ones ("juvenile texture" of bone surfaces).

Still strange, though, that growth goes on after the epiphyses fuse to the diaphyses. It used to be textbook wisdom that the whole point of the separate ossification of the epiphyses is (more or less) determinate growth, no?