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Re: Heterochrony
In a message dated 95-12-09 22:46:12 EST, zooamy@zoo.latrobe.edu.au (Adam
Yates) writes:
>Not exactly, the nomenclature surrounding the evolution of ontogeny
>(heterochrony) has been confused but the classification of heterochronic
>processes put forward by
>McKinney and MacNamara is the best, and seems to be the
>most accepted one. In this scheme Paedomorphosis is the general effect of
>retaining juvenile characters into adulthood. This effect can be achieved
>by a number of processes, one of which is neoteny (retarded rates). In
>other paedomorphic processes (progenesis and postdisplacement) the ancestral
>rate of ontogeny is retained but the time of ontogeny is shortened.
Not surprisingly, the nomenclature of heterochrony has undergone some
evolution since I last read up on it. Can you supply the McKinney & MacNamara
reference, please?