. Geological magazine. Fig. 2. Fig. 1.—Skull of Ceratosauius ; side view. Fig. 2.—The same skull ;front view. Fig. 3.—Skull andhrain-cast of Ceratosaurwinasicorms^ Maish ;seen from above, one-sixth natural size, a,nasal opening ; b,horn-core; c, antor-hital opening, c, cerebral hemispheres;d, oibit; e, lowertemporal fo&sa; f,frontal bone; A, supra-temporal fossa; j,]ugal bone; in,maxillary bone; m,medulla; n, nasalbone; oc, occipitalcondyle; ol, olfactorylobes ; pf, pre-trontalbone; pm, pre-mixiUaiy bone; q,ijuadiate bone, qj,quadrato-jugal 256 Prof. 0. C. Marsh—J!^eio J
. Geological magazine. Fig. 2. Fig. 1.—Skull of Ceratosauius ; side view. Fig. 2.—The same skull ;front view. Fig. 3.—Skull andhrain-cast of Ceratosaurwinasicorms^ Maish ;seen from above, one-sixth natural size, a,nasal opening ; b,horn-core; c, antor-hital opening, c, cerebral hemispheres;d, oibit; e, lowertemporal fo&sa; f,frontal bone; A, supra-temporal fossa; j,]ugal bone; in,maxillary bone; m,medulla; n, nasalbone; oc, occipitalcondyle; ol, olfactorylobes ; pf, pre-trontalbone; pm, pre-mixiUaiy bone; q,ijuadiate bone, qj,quadrato-jugal 256 Prof. 0. C. Marsh—J!^eio Jurassic Dinosaurs. margin of the pterygoid is united the strong, curved, transversebone, whicli projects downward below the border of the upper jaws,as shown in Figure 1, t. There is a very short, thin, columella, which below is closelyunited to the pterygoid by suture, and above fits into a smalldepression of the post-frontal. The palatine bones are well developed and, after joining thepterygoids, extend forward to the union with the vomers. Thelatter are apparently of moderate size. The pre-sphenoid is well developed, and has a long pointedanterior extremity. The whole palate is remarkably open, and the principal bonescomposing it stand nearly vertical, as in the Sauropoda. The Brain.—The brain in Ceratosaiirus was of medium size, butcomparatively much larger than in the herbivorous Dinosaurs. Itwas quite elongate, and situated somewhat obliquely in the cranium,the posterior end being inclined downward. The position of thebrain in the skull, and its
Size: 1546px × 1617px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookidgeologicalma, bookyear1884
