Re: The 5th cerebral nerve once more

["David Marjanovic" <david.marjanovic@gmx.at>]

>   The problem here is the wording (though accurate) is not immediately
described without having
> the bone in your hand, or knowing your cranial nerve separations. The
fifth cranial never normally
> has one opening in the laterosphenoid, where all three branches separate
outside the bone.
> Incipient separation occurs with the third branch, the ophthalmic, at the
base of the opening,
> creating a "trough." This progresses deeper into the bone in other
dinosaurs 9and birds) as two
> separate openings (V1-2, and V3).

I know, this is well enough described in what I've read. But the ophthalmic
branch is called V1, isn't it?

> Oviraptorids, *Avimimus,* birds, and segnosaurs, as well as the
> above-mentioned forms,

Which, *Allosaurus*?
(I've found the descriptions of *Monolophosaurus* and *Sinraptor*, but
haven't copied them yet. So at least I'll be able to check if state 1 for
*Sinraptor* is a simple typo or not. But, anyway, *S.* isn't even a
coelurosaur and therefore not extremely relevant for bird origins. The
description of the skull of *Erlikosaurus* is in J. Can. Earth Sci. too,
isn't it?)

> have the two openings. There does not appear to be any single commonality
> for theropods with both openings, but perhaps two, or one with some
distinctive reversals.

So Oviraptoridae have 2 distinct openings and thus state 2 rather than 1?
Just want to make sure. :-)