Cloacae, sex arms and penis bones: the tricky art of fossil sexing – The Guardian


The Guardian

Cloacae, sex arms and penis bones: the tricky art of fossil sexing
The Guardian
As everyone knows, sex was invented in Scotland. Research published recently on placoderm fish fossils from Scottish Devonian lakes (around 365 myo) found evidence for how this extinct group of animals copulated. In today's cartilaginous fish, there

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