Paleoworld- Carnosaurs (Part 2)

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[@daliborjovanovic510]

Oh, how much we have learned about Carnotaurus since 1994. Back then, Carno (who's still only known from the well-preserved holotype) was an oddity among theropods with its bizarre anatomy, and in hindsight lumping it into Carnosauria shows how much our understanding of theropods has advanced since 1994. Carnotaurus was an abelisaur, a basal group of theropods (who diverged from the main theropod lineage, tetanurans, some 200 million years ago and evolved independently) and were common in the southern continents as well as Europe, where they eventually became top predators during the Late Cretaceous, and are characterized by tiny vestigial arms, short, boxy heads, osteoderms lining their backs and occasional head crests or horns of some kind. But back in 1994, fossils of large abelisaurs besides Carno were few and mostly fragmentary so we knew little of its ancestry. Also, back in the 90s, it was thought that it lived some 110-100 million years ago, but we have since realized that it was much younger than originally thought, having lived 72-68 million years ago (making it a contemporary of Albertosaurus), and making it one of the youngest abelisaurs and one of the youngest large theropods overall. It's bizarre characteristics: its devil horns, long legs, tiny-weenie arm and relatively large size were the final extreme of abelisaur evolution (much like how T. rex was the final extreme of tyrannosaur evolution, biggest body, biggest head, biggest teeth and strongest jaws) not some primitive, obsolete characteristics of an early theropod. And Carno's horns were undoubtedly NOT used for killing, they were display structures.

[@UltimateThanos]

On the flipside, a fictional carnosaur that *does* fight and kill with its horns would make for a great fantasy creature.

[@kR-qj7rw]

To think it was such an oddity and definitely an up and coming star of popular media in the 90s I had a magazine who tuens out to be from around the same time that mentioned some sort of indian theropod and Majungaaaurus but as oddities too, que the 2008 horrible but still notable show Jurassic fight club and later dinosaur revolution and ever since there's been abwlisaurods on screen in moat large documentaries Pretty sure dinosaur planet from the early 2000s had one in an episode too culminating in last year's prehustoric planet Wich has these short faced vestigial arms weirdos in lifelike appearance

[@gangster3591]

Narrator sounds like Ben Gazzarra. Good video

[@wantedwario2621]

The carno smile and irish dance is the stuff of magic

[@philiptonymcgrawjrthephilm1570]

Carnotaurus The Enemy Of The Tyrannosaurus Rex🦖

[@HanilHeartless]

when i was a kid i loved this tv show, but it only puts the same pics over and over ... it needs computer generated thingys

[@Madskills-hw2ox]

@Anibal Gongora Martinez I’m from the future, it’s 2019!!! You should see CGI now 😂

[@persianking44]

That's really a far too general of a question. Yes, many species of predators were quadrupeds, ranging from the small mammals and crocodilians (which varied in size) that lived alongside the dinosaurs to the many species of predatory synapsids such as Dimetrodon that lived before them. If you are asking if there were any quadrupedal theropod dinosaurs, then the answer is no, they were all bipeds.

[@kR-qj7rw]

Rip Jose Bonaparte you looked old 30 years ago and helped shape the discovery of dinosaurs in the southern hemisphere

[@Gunners_Mate_Guns]

This must be really outdated. Using modern studies, Carnotaurus had a relatively weak bite compared to that of most of his Carnosaur counterparts. Also, he was far from the largest Carnosaur in South America, especially compared to the biggest currently known from the continent, Giganotosaurus.

[@Beanmachine91]

that makes a lot of sense thnx, on the other hand what about the spinosaurids? succomimus, baryonyx, spinosaurus etc?

[@persianking44]

@FrshJurassicPrnceYA Well, that's what happens over ten years, we tend to learn about our natural past a little more :P Try going back ten years ago and telling people that many theropod dinosaurs probably had feathers at least once in their lifetime, they'd call you crazy.

[@diebesgrab]

“It wasn’t until the end of the Cretaceous 65 million years ago that the giants truly emerged.” u wot m8?

[@wantedwario2621]

0:39 Fuzzy dino in 1990's

[@russiankgbagent9]

voice of god narrator

[@persianking44]

Same, since all predatory dinosaurs, large and small, are theropods.

[@diebesgrab]

While functionally correct, that’s likely not strictly true. Dinosaurs evolved from predatory and omnivorous animals, and omnivory may not have completely evolved out of the very earliest sauropodomorphs and ornithischians.

[@user-tb1fu6qo4j]

The show stated that the Carnotaurus was the largest Carnivorous dinosaur found in South America. Not too long after the season,Giganotosaurus was discovered......

[@mdalsted]

Heheh... This documentary said that Carnotaurus was the top predator of South America. XD Was this before Giganotosaurus and Carcharodontosaurus were discovered?

[@mdalsted]

Sorry, I got "top predator" mixed up with "biggest". Many apologies. >__< In my defense, though, PaleoWorld has a history of calling whatever predatory creature the episode's about "the most fearsome predator of all time" or something along those lines. That's what threw me off.

[@Tareltonlives]

Well, it was the top predator in the end of the Cretaceous. Maybe some Megaraptoran competition but the Abeliosaurs outlasted the big carnosaurs

[@daspletoraptor8366]

Carnotaurus also lived later in the cretacous.

[@NobleKorhedron]

Yes, @Martin D. This dates from 1994.

[@NobleKorhedron]

@@Tareltonlives: Drop the 'o', and you'd be right...

[@louiemercado5595]

yes carnotaurus is belong to the family called abelisaurids

[@daliborjovanovic510]

You're so wrong on so many levels.

[@CherishEarth]

This also indicates it would have coexisted with carcharodontosaurids and therefore not been the dominant animal in South America.

[@daliborjovanovic510]

There is no record of carcharodontosaurids past 90 mya. Abelisaurs like Carnotaurus were the top predators in the southern continents.

[@VicariousReality7]

@HanilHeartless I've seen new computer generated animations that use the same clips over and over, often reversing them to make it seem like something new.

[@Raphael041]

4:42 wrong depiction of carnotaurus, it should have had shorter and tinier arms even shorter than t-rex

[@Canadian_duck31]

Raph 04art this is from the 90's its not gonna be up to date.

[@mdalsted]

I think the art was even older than the 90's. I guess the editor(s) ran out of time to find accurate Paleo art of Carnotaurus. (shrug)

[@Beanmachine91]

were there any four legged carnivores?

[@ibtiago18]

As of 2019, yet to be discovered. Unless you count Spinosaurus, which may have been quadrupedal and aquatic.

[@diebesgrab]

Ivo Tiago Spinosaurus seems like it was almost certainly quadrupedal; maybe not obligately so, but certainly it’s proportions and weight distribution would have made primary bipedalism difficult.

[@yawn370]

I hate the narrators voice, truly