This expedition also recovered the peculiar spiny sauropod Amargasaurus. The only skeleton (holotype MACN-CH 894) was unearthed in 1984 by an expedition led by Argentinian paleontologist José Bonaparte.
The Abelisaurids were the dominant predators in the Late Cretaceous of Gondwana, replacing the carcharodontosaurids and occupying the ecological niche filled by the tyrannosaurids in the northern continents. It is also one of the best-understood Genera of Abelisauridae. The type species Carnotaurus sastrei is the only known species, placed in Carnotaurini Tribe along with Aucasaurus.
#Mesozoica spinosaurus skin#
The skin on the head is more likely to have been matrix rock at this point, since The only evidence is a photo that re-surfaced online in 2019. It shows us that it was covered in circular non overlapping scales, with osteoderms running down the length of the back. These teeth are very suitable for crushing bone, making this carnivore's bite enormously lethal.Ī single nearly complete skeleton has been described, including a large skin print on the right side of the specimen, covering the head, arms, torso and legs, showing us much about its skin. Also, Carnotaurus's teeth are very unique design - they were very wide, and relatively blunt, resembling the railroad spike. The bigger the postorbital area - the stronger the bite force. The "rottweiler effect" is especially large back part of the skull (postorbital area) where jaw muscles are located. According to paleontologist Robert Bakker, so-called "rottweiler effect" makes an animal's bite powerful. This opening was formed by the nasal and premaxilla only, while in some related ceratosaurs the maxilla also contributed to this opening.Ĭarnotaurus had a very big postorbital area of skull, allowing him to bite very strong.
The frontmost of these openings, the external naris (bony nostril), was sub rectangular and directed sidewards and forwards, but was not sloping in side view as in some other ceratosaurs such as Ceratosaurus. In other dinosaurs, the skull was perforated by six major skull openings on each side. Mauricio Cerroni and colleagues, in 2020, agreed that the horns supported keratinous sheaths, but argued that these sheaths would not have been greatly longer than the bony cores. Bonaparte, in 1990, suggested that these horns would probably have formed the bony cores of much longer keratinous sheaths. These horns were thick and cone-shaped, internally solid, somewhat vertically flattened in cross-section, and measured 15 cm (5.9 in) in length.
A prominent pair of horns formed by the frontal bones, protruded obliquely above the eyes. The snout was somewhat broad, and not as tapering as seen in more basal theropods like Ceratosaurus, and the jaws were curved upwards. The only known skull measures 59.6 cm (23.5 in) in length, and was proportionally shorter and deeper than what's seen in any other carnivorous dinosaur. Hands of this creature had four very small fingers, and only two of them actually had bones. In particular, the arms of Carnotaurus, when compared to their body size, were far smaller than even than those of Tyrannosaurus and were completely useless, and possibly the smallest forelimbs in whole animal kingdom compared to body mass. It is probably the fastest running non-ornithomimid theropod, reaching a speed of up to 40 mph.Ībelisaurids also have very reduced forelimbs with four or five fingers. The Ceratosaurus had a few horns on its head also. Abelisaurids have odd features in their heads, as Carnotaurus had two large brow horns over its eyes, while its smaller relative Majungasaurus had highly bizarre looking knob on its head. It's a packed episode!You can now leave us a VOICEMAIL!!! Call 73 Follow us on Twitter WEEK'S GUEST:Facebook - World Video Game - Matter Astroid - 's Choice -!/home/allIN PODCAST AD:The Drunken Dork Podcast - can also listen to us on:iTunes: Radio: : : : TO US ON MORE PODCASTS:I Know Dino: The Big Dinosaur Podcast: Episode 42's Chat! with Revill and Friends: July 12, 2015!-revill-friends/id809113340?mt=2 of Touch Podcast: Episode 17 Indycast: segments every so often US ONLINE:Twitter - JP on Reddit - us an email at with any ideas, concerns, news, or if you just want to say hello! Also you can send any JP related images for our flickr page.Carnotaurus was a large theropod and one of the largest abelisaurs, about 7-9 meters in length, and between 2-3 tons in weight. Welcome to the Jurassic Park Podcast! In this episode we have a bit of news, my Jurassic Park Arcade recap, an interview with Max Wood from Mesozoica, and a Jurassic Park gaming Poll segment. About Mesozoica w/ Max Wood, Jurassic Gaming, News & More! - Episode 25 Episode