File:PZSL1889Plate17.png

English: Oilbird osteology.

1. Skull from lateral
2. Skull from dorsal
3. Skull from ventral (lower jaw removed)
4. Lower jaw from dorsal

ag = angulare, al.e = aliethmoid, al.n = alinasal, ar = articulare, b.pg = basipterygoid, b.t = basitemporal, c.f.c = craniofacial cleft, d = dentary, e.n = external nostril, e.o = exoccipital, eu = opening of eustachian tube, [f = frontale], f.m = foramen magnum, I = foramen of first cranial nerve, i.c = foramen of internal carotid artery, [i.n = internal nostril], II = foramen of second cranial nerve, j = jugal, l = lacrymal, mx = maxilla, mx.p = maxillopalatine, n = nasal, n.px = nasal process of premaxillary, oc.c = occipital condyle, o.s = obdurator space, o.u = uncinate, p = parietal, pa = palatine, pa.s = parasphenoid, p.e = perpendicular ethmoid, pg = pterygoid, p.p = pars plana, p.s = presphenoid, [px = premaxilla], q = quadrate, q.j = quadratojugal, s.ag = supraangulare, s.n = nasal septum, s.o = supraoccipital, sp = splenial, sq = squamosal, t.e.o = tympanic wing of exoccipital, t.f = temporal fossa, ty / ty' tympanic bones, ty.c = tympanic cavity, V = foramen of fifth cranial nerve, X = foramen of tenth cranial nerve, XII = foramen of twelfth cranial nerve.