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Re: T-J Extinction event article (more media errors?)
> > Tritylodontids survived into the EK (in Japan); all other synapsids
> > mammals were indeed gone by the Tr-J mass extinction.
> Well ... "besides mammaliforms". There are some taxa that may not belong
> to crown group _Mammalia_ which persisted.
This is another problem -- whether Mammalia has the traditional content
(with *Morganucodon*, *Megazostrodon* etc., without Tritylo- &
Tritheledontidae) or is restricted to the crown group. AFAIK there is no