File:1911 Britannica-Bird-Skull of Fowl1.png

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English: Skull of adult Fowl. Here the temporal fossa is bridged over by the junction of the post-frontal and squamosal processes (pf., sq.). The processes of the mandible (iap, pap) are characteristic of this type, and of the anseres.

a, Angular of mandible.
ar, Articular.
bt, Basi-temporal.
d, Dentary.
eo, Lateral occipital. eth, Ethmoid.
f, Frontal.
iap, Interangular process of mandible.
ios, Interorbital septum.
j, Jugal.
l, Lacrymal.
mx, Maxillar.
n, Nasal.
os, Orbito-sphenoid.
p, Parietal.
pa, Palatine.
pap, Posterior angular process of mandible.
pe, Ethmoid.
pf, Post-frontal.
pg, Pterygoid.
ps, Pre-sphenoid.
px, Premaxilla.
q, Quadrate.
qj, Quadratojugal.
sa, Supra-angular or coronoid.
so, Supra-occipital.
sq, Squamosal.
ty, Tympanic cavity.
v, Vomer.
1, Exit of olfactory nerve.

Illustration from 1911 Encyclopædia Britannica, article Bird
Date
Source Encyclopædia Britannica Eleventh Edition, Vol. 3, Page 961
Author Encyclopædia Britannica, 1911

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Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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