Quote:On his website, Paul estimates the Giganotosaurus holotype at 6850 kg. However, there are 2 issues with his skeletal likely underscoring the mass: 
-He has used a specific gravity of 0.85 when it should have been about 0.915 following Hartman's 2013 GDI analysis.
-In his skeletal, the preserved scapula is taken as complete when it isn't (the same issue that plagues Hartman's skeletal), thus making the chest much shallower than it would be. The correction factor, following both SpinoInWonderland's GDI of GetAwayTrike's Giganotosaurus as well as the GDI of his own skeletal, is 6800 to 7530 kg.
Correcting both of these, Greg Paul's skeletal of Giganotosaurus goes to 8170 kg for MUCPv-Ch1 (and it is about 12.46 meters long for the holotype).

Quote:I get about ~5.79 tonnes for IPHG 1922 X 46 if scaled based on my unreleased GDI for the old version of my Giganotosaurus skeletal (around ~7.4 tonnes, the deeper chest did quite a bit). Scaling this result up to SGM-Din 1 gives around ~9.8 tonnes (using my best-fit scaling factor).

Quote:The missing elements are based on Tyrannotitan, the animal that is most closely related to Carcharodontosaurus according to the latest phylogenetic analysis (Canale 2014) and also one that shares with it a bunch of very interesting characters that will be discussed in another journal. Carcharodontosaurus is NOT out of the clade that bounds Tyrannotitan, Giganotosaurus , and Mapusaurus togheter, it is in fact strongly bounded to them in Carcharodontosaurinae, a clade of derived, giant Gondwanan Carcharodontosaurids, even if another smaller clade, Giganotosaurini, bound the south american Carcharodontosaurines even more strongly. 

Carcharodontosaurus is barely any bigger than Tyrannotitan in linear dimensions according to how most of the bones compare, the Carcharodontosaurus holotype has a femur smaller than that of the Tyrannotitan holotype, it's extrapolation to SGM din 1 size is barely any bigger than the same element in Tyrannotitan paratype, and the jugal of the Tyrannotitan paratype fits almost perfectly in SGM din 1 skull. Here it is scaled to be a vague (and optimistic) 0.5% bigger in linear dimensions based on marginal differences, and is also given a slightly lengthier tail to fit the only known caudal of the Carcharodontosaurus' holotype better.

Quote:Name: Black shark
Scientific name: Labeo chrysophekadion.
Origin: Thailand.
Size: Up to 90cm.

Quote:Name: Harlequin shark.
Scientific name: Labeo cyclorhynchus.
Origin: Democratic Republic of the Congo (DRC) and Gabon, Africa.
Size: 15cm.

Quote:240mm SL

Quote:155mm SL

Quote:Some of the cranial elements of C. saharicus show apartial fusion between them, such as the lacrimal-prefrontal (SGM-Din 1), which sheds doubt about the full-grown condition of these materials.

Quote:We’ve recently begun to realize that fusion of the neurocentral suture in vertebrates is not a perfect proxy for age. In birds, all centra fuse very early in life, even before the vertebrae cease growing. In crocs, centra can remain open beyond sexual maturity. We’re finding some dinosaur skeletons presenting so-called signs of “immaturity” or lack of secondary adult characters while presenting medullary bone, suggesting they can attain sexual reproductive age before some skeletal systems finish fusion. Adulthood, then, seems complex. The Egyptian carch material is much smaller than the Moroccan material, which is nominally why it’s deem “immature.” 

*This image is copyright of its original author

(05-19-2020, 04:55 PM)DinoFan83 Wrote: Carcharodontosaurus is a genus of carnivorous carcharodontosaurid dinosaur that existed during the Cenomanian stage of the mid-Cretaceous period. It is currently known to have been among the largest theropods found, with known specimens significantly larger than Tyrannosaurus rex and on par with or approaching the estimated body mass for Giganotosaurus and Spinosaurus. 
The genus Carcharodontosaurus is named after the shark genus Carcharodon. itself composed of the Greek karchar[os] ( meaning "jagged" or "sharp") and odōn ("teeth"), and the suffix -saurus ("lizard"). Carcharodontosaurus includes some of the longest and heaviest known carnivorous dinosaurs, with various scientists proposing length estimates for the species. Based on relatives such as Giganotosaurus, the neotype of Carcharodontosaurus (SGM-DIN 1) would have been roughly 13-13.7 meters long and 9000-9800 kg. But this specimen was only a subadult, so adults would have been even larger.
Carcharodontosaurus were carnivores, with enormous jaws and sharp, serrated teeth (just like those of sharks, hence the same) up to 20 cm long. A skull length of over 1.6 meters has been restored for C. saharicus. In 2001, Hans C. E. Larsson published a description of the inner ear and endocranium of Carcharodontosaurus saharicus. Starting from the portion of the brain closest to the tip of the animal's snout is the forebrain, which is followed by the midbrain. The midbrain is angled downwards at a 45-degree angle and towards the rear of the animal. This is followed by the hindbrain, which is roughly parallel to the forebrain and forms a roughly 40-degree angle with the midbrain. 
Overall, the brain of C. saharicus would have been similar to that of a related dinosaur, Allosaurus fragilis. Larsson found that the ratio of the cerebrum to the volume of the brain overall in Carcharodontosaurus was typical for a reptile. Carcharodontosaurus also had a large optic nerve.