Re: neotheropod classification

["Jaime A. Headden" <qilongia@yahoo.com>]

Mickey Mortimer (mickey_mortimer11@msn.com) wrote:

<<- lacrimal ventral process anteriorly directed (primitive
state laterally directed) I must admit to not understanding this
character. It is ventrally directed in all theropods. Perhaps he
meant ventral to be the primitive state and the derived state
would be anteroventral. Or perhaps it's the direction the long
axis of the ventral process's cross section. I don't know.>>

  I forgot to reply to this. In troodontids and
ornithomimosaurians, the lachrymal's ventral ramus is oriented
rostrally, curving forward at the distal end. In some taxa,
there is a distinct point of flexure, in others there is a
gentle curve (most troodontids have the first, though some in
both groups have both types of anterior ramus).

=====
Jaime A. Headden

  Aaaaaaaaaaaaaaaaaaaahhhhhhhhhhhhhhhhhhr-gen-ti-na
  Where the Wind Comes Sweeping Down the Pampas!!!!

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