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Re: Massospondylids



In a message dated 6/18/01 11:54:08 AM EST, Adam.Yates@bristol.ac.uk writes:

<< For instance Plateosaurus has 25 presacrals and a caudosacral in the 
sacrum whereas Massospondylus and Lufengosaurus have 24 and a dorsosacral. >>

All very interesting observations; please publish a.s.a.p.! Meanwhile, watch 
out for sexual dimorphism in sacral vertebral counts among prosauropods (see 
Galton's recent paper on Sellosaurus, as I recall), although the above seems 
to be a pretty big difference. All major dinosaur groups should undergo 
complete systematic revisions every ten years or so.