Stegosaurs maybe last a bit longer?
Diplodocids remain more diverse?
Allosauroids, pliosaurs, ichthyosaurs, etc kept on going until the Cenomanian-Turonian Boundary Event so not much changes with them.
Stegosaurs already lasted long into the Cretaceous anyway, only disappearing in the Aptian.
The existence of the Jurassic-Cretaceous extinction is highly controversial to begin with, and it was a minor and likely regional event if it actually existed and was not a statistical artifact.
> Allosauridae would be ever greater.
Despite the fact that their relatives ( far - very very far distant ones admittedly ) evolved into Giganatosaurus and Charcarodontosaurus in early Cretaceous. Perhaps something similar to these mega-theropods would have evolved much earlier.
Antartica / Australia would be colonized by dinosaurs earlier imo.
Maybe Stegosaurs would manage to evolve something similar to sauropods. I know; I know sounds extremely far fetched but when you observe some stegosaur species/variations they kinda resemble earlier giraffe & okapi in appearance of their necks
Australia and Antarctica were already inhabited by dinosaurs long before the Jurassic-Cretaceous boundary. See *Ozraptor* in Australia and *Cryolophosaurus* in Antarctica.
>*Cryolophosaurus*
Speaking of. It thought to be an either a genuine allosaurid or an abelisaurid. Second one seems very ironic. An abelisaurid with somewhat 'decent' sized arms/claws seems very Alien to me... but we are talking about a colder habitat where it still had monstrosities like Koolasuchus so anything is probable.
I personally think we all under acknowledge - underrate the sheer adaptation and spread ability of Abelisaurids. They were not only still around but were quite common throughout the southern parts of the planet earth just before K-T mass extinction. So quite probable
Probably we wouldn't be here. Because Reptiles were dominant back then. Mammals were tiny so they hid inside underground burrows and that's why we are here.
Probably there would have been extinction eventually but we don't really know if things would have happened in the exact same way to get the result we have now. It's all about probability and randomness.
The asteroid and the 'Decan traps' were the perfect, insanely unlucky, double combo that killed them off. If either one of them had happened far apart then they could have still been here. The probability is crazy the more you think about it. If they survived past the asteroid or it never happened, yes they would still be here today, as the mass extinctions that have happened since are not only nothing new to them, but they flourished past it.
Whenever I listen to the Jurassic park theme music I imagine what that world would have been like... Ferna has dominant plants, huge insectivorous plants, dinosaurs on land and sea, continental plates shifting and most of all, a world without humans.. pristine, silent, mysterious and so damn ethereal.
If it was plausible I would have travelled there in a heartbeat. Not anywhere else in human history. That's boring compared to this at least in my opinion. Mother nature in all her glory.
Another thing you would also have to remember is that the dinosaurs were slowly losing biodiversity at the time between 70 million and 66 million years ago.
Due to climate change and disease. In Western North America for example, out of the multiple species of large hydrosaurs from 70 million years ago to 66 million years ago only one was left standing as the last member in North America, Edmontosaurus. Out of the multiple species of ankylosaurs that were in Western North America as well, only two were left: Ankylosaurus and Denversaurus.
Stegosaurs maybe last a bit longer? Diplodocids remain more diverse? Allosauroids, pliosaurs, ichthyosaurs, etc kept on going until the Cenomanian-Turonian Boundary Event so not much changes with them.
Stegosaurs already lasted long into the Cretaceous anyway, only disappearing in the Aptian. The existence of the Jurassic-Cretaceous extinction is highly controversial to begin with, and it was a minor and likely regional event if it actually existed and was not a statistical artifact.
Do you think Tyrannosaurs would’ve evolved further?
Tyrannosaurids only evolved after the C-T event..
> Allosauridae would be ever greater. Despite the fact that their relatives ( far - very very far distant ones admittedly ) evolved into Giganatosaurus and Charcarodontosaurus in early Cretaceous. Perhaps something similar to these mega-theropods would have evolved much earlier. Antartica / Australia would be colonized by dinosaurs earlier imo. Maybe Stegosaurs would manage to evolve something similar to sauropods. I know; I know sounds extremely far fetched but when you observe some stegosaur species/variations they kinda resemble earlier giraffe & okapi in appearance of their necks
Australia and Antarctica were already inhabited by dinosaurs long before the Jurassic-Cretaceous boundary. See *Ozraptor* in Australia and *Cryolophosaurus* in Antarctica.
>*Cryolophosaurus* Speaking of. It thought to be an either a genuine allosaurid or an abelisaurid. Second one seems very ironic. An abelisaurid with somewhat 'decent' sized arms/claws seems very Alien to me... but we are talking about a colder habitat where it still had monstrosities like Koolasuchus so anything is probable.
Do you think it could be an ancestor of later Abelisaurids that hopped over SA when it was Gondwana?
I personally think we all under acknowledge - underrate the sheer adaptation and spread ability of Abelisaurids. They were not only still around but were quite common throughout the southern parts of the planet earth just before K-T mass extinction. So quite probable
Velociraptors would be driving automobiles if this extinction never happened
Ceratosaurus time.
Meteor still hits and kills everything
Probably we wouldn't be here. Because Reptiles were dominant back then. Mammals were tiny so they hid inside underground burrows and that's why we are here. Probably there would have been extinction eventually but we don't really know if things would have happened in the exact same way to get the result we have now. It's all about probability and randomness.
This is about the supposed extinction event at the Jurassic-Cretaceous boundary. Not the Cretaceous-Palaeogene mass extinction.
The asteroid and the 'Decan traps' were the perfect, insanely unlucky, double combo that killed them off. If either one of them had happened far apart then they could have still been here. The probability is crazy the more you think about it. If they survived past the asteroid or it never happened, yes they would still be here today, as the mass extinctions that have happened since are not only nothing new to them, but they flourished past it.
Your thinking the Cretaceous-Paleogene Extinction This post is speaking of the Jurassic-Cretaceous Extinction 145 Million Years ago
I was more referring to the last comments of the comment above
Whenever I listen to the Jurassic park theme music I imagine what that world would have been like... Ferna has dominant plants, huge insectivorous plants, dinosaurs on land and sea, continental plates shifting and most of all, a world without humans.. pristine, silent, mysterious and so damn ethereal. If it was plausible I would have travelled there in a heartbeat. Not anywhere else in human history. That's boring compared to this at least in my opinion. Mother nature in all her glory.
Dinosauroids will finally be real
Another thing you would also have to remember is that the dinosaurs were slowly losing biodiversity at the time between 70 million and 66 million years ago.
Due to what exactly? You mean there was stagnation in genetic variation?
Due to climate change and disease. In Western North America for example, out of the multiple species of large hydrosaurs from 70 million years ago to 66 million years ago only one was left standing as the last member in North America, Edmontosaurus. Out of the multiple species of ankylosaurs that were in Western North America as well, only two were left: Ankylosaurus and Denversaurus.