PLATES 
ABBREVIATIONS 
al, anterior upper labial 
d, dentary 
div, dorsolateral diverticulum of the 
buccal cavity 
ect, ectopterygoid 
ent, entopterygoid 
toc, infraorbital laterosensory 
and the enclosing bone 
Ic, labial cartilage 
If, labial fold 
lg, ligament from maxillary bone to 
coronoid process of mandible 
mdf, mandibular labial flap 
mdff, mandibular labial-flap furrow 
mdl, mandibular labial cartilage 
mdpc, mandibular preangular crease 
mz, maxillary bone, or its teeth 
maf, maxillary labial flap 
maff, maxillary labial-flap furrow 
canal, 
maxpc, maxillary preangular crease 
ne, nasal cavity 
nt, nasal tube 
pas, superior or inferior primary al- 
veololabial sulcus 
pl, posterior upper labial cartilage 
pmx, premaxillary bone, or its teeth 
ps, parasphenoid 
pul, primary upper lip, or maxillary 
breathing-valve 
sas, superior or inferior secondary al- 
veolo-labial sulcus 
sbf, sublabial furrow 
slf, supralabial furrow 
smf, submaxillary furrow 
sp, splenial 
spr, suprapalatine recess 
vo, vomer 
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