Author's note: these pages were written some years ago. I am not planning to update them. For a more current coverage, see the link to palaeos com Palaeos website (to which many links on these pages point to anyway. More info here

Bones in the Amniote skull

Amniotes = vertebrate animals with a special membrane around the egg
= Wikipedia link reptiles, link to palaeos com birds, and mammals (or Sauropsids and Theropsids)
the dorsal (top) view
the lateral (side) view
the palatial (bottom) view
(lower jaw not shown)
The animal shown here is Cotylorhynchus, a middle Permian Caeseid pelycosaur
diagram from the Tree of Life page - external link Amniote Phylogeny © 1996 Michel Laurin and Jacques A. Gauthier

colour key

Abbreviation name of bone
Bc braincase
E epipterygoid
Ec ectopterygoid
F frontal
J jugal
L lacrimal
M maxilla
N nasal
P parietal
Pa palatine
Pm premaxilla
Pp postparietal
Po postorbital
Pof postfrontal
Prf prefrontal
Ps parasphenoid
Pt pterygoid
Q quadrate
Qj quadratojugal
S stapes
Sq squamosal
St supratemporal
T tabular
V vomer

 
 

to next node up (internal link)link to palaeos com Vertebrate Page
 
 




page history

uploaded 13 August 1999
modified 26 October