Bulletin of the Geological Society of America . r « ... Figure 1.—Xeic Restoration of the Skull of Mcsosaunis hraziliensis from the Permian of Irah, Brazil Natural size. From specimens at the Fniversity of Tiibingen. Eo :=: Basioccipitale. Bs = Basisplienoid. Jug = Jugale. Mx = Maxilla. X =: Nasale. No = Internal nares. Pal = = = = = Vomer. Omphalosaurus Omphalosaunis is a coastal remnant of rather primitive Ichthyosauria,which have not yet become so well adapted to marine habits as have laterforms. Both Mesosauria and Omphalosauria exhibit
Bulletin of the Geological Society of America . r « ... Figure 1.—Xeic Restoration of the Skull of Mcsosaunis hraziliensis from the Permian of Irah, Brazil Natural size. From specimens at the Fniversity of Tiibingen. Eo :=: Basioccipitale. Bs = Basisplienoid. Jug = Jugale. Mx = Maxilla. X =: Nasale. No = Internal nares. Pal = = = = = Vomer. Omphalosaurus Omphalosaunis is a coastal remnant of rather primitive Ichthyosauria,which have not yet become so well adapted to marine habits as have laterforms. Both Mesosauria and Omphalosauria exhibit marked evidence ofpachyostosis, according to Nopsca/ and are therefore on the way towardaquatic adaptation. * Anatom, Anzeiger, 1922 ; Pala^ont. Zeitsclir., v, 3, 1922. Both papers are still inpress. the two main lines 465 : and Longipinnatid^ In the Triassic the Ichthyosauria already appear, divided into twomain lines, the Latipinnatidse and the Longipinnatidae. The first known latipinnatid is Mixosaurus, from the di
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgeology, bookyear1890
