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RE: titanosaurs... and ichthyosaurs
> > Isn't that the same? ~:-|
> Strictly speaking, no. Amphiplatyan: both articular faces flat;
> Platycoelous: one side flat, one side concave.
Aaaaah, thanks a lot. Always assumed it was the same. (In German I've only
seen "biplan" in use.)
> Maybe you should stop banging your head on the keyboard - that won't help
> your mental acuity. Probably just give you a headache.
Would ruin the poor old keyboard. Which is why I didn't do it, but it would
have been a logical reaction. :-)
Next question: www.ucmp.berkeley.edu/people/motani/ichthyo/strati.html shows
*Platypterygius* dying out neatly and conveniently at the Cenomanian-Turonian
boundary, coincident with a small mass extinction and a very impressive
Oceanic Anoxic Event. However, I've read of ichthyosaur crumbs from the
Turonian. (I might even find a ref, but not primary literature.) Are they
misidentified, reworked (by what? Wave action? Submarine mudslides?) or real
and simply unknown to Motani (improbable)?