The next image was an unfound copyright, but skull can be seen, and that is what is important in this bit. The skull here is in a strange perspective but two things stand out that remind us of Brachiosaurus immediately: high nostrils and skull size. The dental battery in both animals is fairly similar; both dinosaurs exhibit a mouth full of long peg-like teeth on both maxilla and mandible. The difference comes in the length of that skull and the crest at the top. The length of this skull is somewhat difficult to see due to the perspective of the illustration, however, it is clearly of a fairly long length for a Brachiosaur. This is due to the fact that the skull of Giraffatitan is actually longer than that of Brachiosaurus and therefore this illustration of the skull is correct in that regard. The crest is set back further on the skull it appears, because the skull is in fact longer than that of its contemporary. The crest itself is also slightly larger than the nares of Brachiosaurus. Brachiosaurus actually possesses a nares much like Camarasaurus does which places the potential opening for the nostrils, if in the center of the nares, more between the eyes. If Giraffatitan were to have its nostrils at the center of its nares crest the nostrils would be just above the eyes and almost even with them rather than forward of them.
Paul's 1988 Giraffatitan reconstruction
|©Michael Taylor |
Skeletal reconstruction of Brachiosaurus altithorax. White bones represent the elements of the holotype FMNH P 25107. Light grey bones represent material referred to B. altithorax: the Felch Quarry skull USNM 5730, the cervical vertebrae BYU 12866 (C?5) and BYU 12867 (C?10), the “Ultrasauros” scapulocoracoid BYU 9462, the Potter Creek left humerus USNM 21903, left radius and right metacarpal III BYU 4744, and the left metacarpal II OMNH 01138. Dark grey bones modified from Paul’s (1988) reconstruction of Giraffatitan brancai. Scale bar equals 2 m.