Basal Ornithischia teeth!!!!!!!

["Alessandro Marisa" <amaris@tin.it>]

Hello all
I have isolated some dental characters for a probable phylogenesis of the
basal Ornithischia (expecially the genera known only for teeth) and the
characters are as follows: - low triangular teeth crown in lateral view -
recurvature absent from maxillary and dentary teeth - well developed neck
separating crown from root - prominent large denticles arranged at 45° or
greater to the mesial and distal margin - premaxillary teeth distinct from
dentary/maxillary teeth - maxillary and dentary teeth asymmetrical in mesial
and distal views.
All these characters are present in the basal Ornithischia (Galtonia,
Tecovasaurus, Revueltosaurus, Lucianosaurus etc) but there are some
characters (although I think this is characters) that are present in some of
the basal Ornithischia (es. Lucianosaurus Technosaurus and Pekinosaurus) and
absent in other, the characters are - presence of accessory cusp - presence
on both labial and lingual side of fine longitudinal striations; well if I
use these as characters I'm right or no?

By and thank's
Alessandro Marisa
"Volunteer of Paleontological Museum of Monfalcone"
Via Achille Grandi n°18
38068 ROVERETO (TN) ITALY
Tel: 039-0464-434658 Email: amaris@tin.it