..." He bore his highly respectable name upon the frontal band of his "berretta" alias "corôa," an open-worked affair, very like the old-fashioned jelly-bag night cap... 
Richard F. Burton 「Two Trips to Gorilla Land and the Cataracts of the Congo Volume 2」
...On the anterior portion of the face we find the nasal bones,which, articulating with the frontal on one side, circumscribe,on the other, the posterior border of the nares...
Édouard Cuyer 「Artistic Anatomy of Animals」
...
The frontal and jugal bones in old specimens of this species areunited by a bar which forms a complete bony orbit—a peculiaritypossessed, as I have before observed, by F...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...
"The frontal ridge between the bases of the horns is less developedin O...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
..."
It appears to be very much troubled with ticks, and an oestrus orbot which deposits its larvæ in the frontal sinuses and cavitiesof the horns...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...The surface of the frontal bone, on which the branches of the premaxillary rest, is very little depressed...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
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