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Re: Platypuses may be older than we think...
Speaking of monotremes - there's an interesting article currently on the New
Between four-headed reptile-like echidna penises, and the no less than ten
sex-determining chromosomes of the platypus, it seems that monotreme
evolution went out of its way to achieve maximum reprodctive weirdness.
GIS / Archaeologist geo cities.com/dannsdinosaurs
Melbourne, Australia heretichides.soffiles.com