Page:The Osteology of the Reptiles.pdf/25

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INTRODUCTION

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8.	Lacrimals (la)	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	Surrounding orbits
9.	Prefrontals (pr)
10.	Postfrontals (pf)
11.	Postorbitals (po)
12.	Jugals (j)
13.	Intertemporals (it)	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	Temporal bones
14.	Supratemporals (st)
15.	Tabulars (t)
16.	Squamosals (sq)
17.	Quadratojugals (qj)
18.	Dentaries (d)	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	Mandible
19.	Coronoids (cor)
20.	Splenials (sp)
21.	Postsplenials (psp)
22.	Angulars (an)
23.	Prearticulars (pa)
24.	Surangulars (sa)
25.	Articulars (art)
26.	Prevomers (pv)	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	Palatal bones, dentigerous
27.	Palatines (pl)
28.	Pterygoids (pt)
29.	Ectopterygoids (ec)
30.	Quadrates (qu)		Articulation of mandible
31.	Exoccipitals (eo)	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \\\ \\\ \\\ \\\ \\\ \\\ \ \end{matrix}}\right\}\,}$	Cranial bones
32.	Paroccipitals (poc)
33.	Proötics (pc)
34.	Postoptics (al)
35.	Stapes (stp)
36.	Epipterygoids (ep)
37.	Ethmoids (se)

AA. Unpaired Bones
38.	Parasphenoid (ps)		Palate
39.	Supraoccipital (so)	$\scriptstyle {\left.{\begin{matrix}\ \\\\\ \\\ \ \end{matrix}}\right\}\,}$	Cranial bones
40.	Basioccipital (bo)
41.	Basisphenoid (bs)

The Primitive Postcranial Skeleton

A. Membrane Bones, Exoskeletal

1. Sclerotic plates in orbits.

2. Paired clavicles, cleithra and elongate interclavicle.

3. Dermal plates or scutes.