Now, I heard from Planet Dinosaur that once a sauropod species died out, the large carnivore that hunted them died out as well. So with that logic, Tyrannosaurus Rex would go extinct once Alamosaurus did. However, with the population of Triceratops, Edmontosaurs, etc, that Tyrannosaurus lived with and hunted, I find that first point very unbelievable, unless the loss of the sauropod some how destroyed the ecosystem balance because the niche couldn't be filled.
During the Jurassic and well into the Mid-Cretaceous Allosauroidea were the large carnivores. They specialized on hunting the big Sauropods and were the Apex predators of their time, meaning they were on top of the food chain. However during the Late Cretaceous another family of large carnivores started replacing the Allosauroidea, the Tyrannosaurs. They became the new apex predators, while the large theropods such as Giganotosaurus or Carcharodontosaurus became extinct. One theory as to why these huge carnivores lost their spot in the food chain is the disappearance of the big Sauropods. They were mostly gone by the end of the Cretaceous in North America, probably due to changing vegetation. Sauropods usually eat ferns, while the end of the Cretaceous saw the rise of deciduous trees. Alamosaurus appearance in North America is often theorized to be an accidental migration event. Somehow a population of these animals managed to migrate from South America to North America, at a time when the two continents weren't connected. When they arrived in North America the big Allosauroidea predators were long extinct and Tyrannosaurs had taken over, who specialized on other type of prey like Hadrosaurs. This meant that Alamosaurus faced no natural predators in North America and could thrive there, which it did judging by the fossil record. We can't see this type of phenomenon a lot today, as humans (accidentially or delibaretly) introduce foreign species into ecosystems where they face no natural predators. For example, when whalers came to South Georgia they had rats onboard their ships, which then went onto the island and found a rich feast of seabirds and no predators to check their population, it was an ecological disaster.
Alamosaurus is currently only known from Texas. But remains of Triceratops and T-Rex have been found in the same region as Alamosaurus. And who knows perhaps at some points in time during the last few million years of the dinosaurs, herds of Alamosaurus could've (emphasis on could've) migrated to Hell Creek for food and then back to Texas to lay their eggs. If the Serengeti-Masai Mara ecosystem is anything to go by, over 2 million herbivores migrate in a continuous cycle following the rains for fresh grass but they (except maybe some Thompson's Gazelles) all return to the short grass plains of the south-eastern Serengeti to give birth. Speculation yes, but it's possible since you can't have herds of Alamosaurus all staying in Texas otherwise all the plant life would be eaten and trampled to the ground leaving little left for the other resident herbivores.
But Whyyyyy ~ ?! Don't Have Small Or Medium Creature - Pachycephalosaurus - Ornithomimus (Gallimimus) - Dakotaraptor (Velociraptor) - Acheroraptor (Pyroraptor)
![KING of the Dinosaurs - Life in the Cretaceous || Jurassic World Evolution 2 🦖 [4K] 🦖](http://i.ytimg.com/vi/AJDZBiiC_P4/mqdefault.jpg)
![KING of the Dinosaurs - Life in the Cretaceous || Jurassic World Evolution 2 🦖 [4K] 🦖](/img/tr.png)
![Prehistoric Planet [2022 - 2023] - Tyrannosaurus Rex Screen Time](http://i.ytimg.com/vi/7ysZBHpD5WY/mqdefault.jpg)
A great series!
E muito bom o seus vídeos
It's so good, I absolutely loved this one National Jurassic and amazing cinematography!!
for me a reallllllly great dino vids,u are the BEST
Sooo beautiful 😍😍
It reminds me of something that I learned long ago, wherever there are giant sauropods, there were giant predators that preyed on them.
What the prologue for Dominion should’ve been…
It's Sooooo Greattttt Coolllll !!!!!
I have no words...
How do you get the pterosaurs out of the aviaries?
Now, I heard from Planet Dinosaur that once a sauropod species died out, the large carnivore that hunted them died out as well. So with that logic, Tyrannosaurus Rex would go extinct once Alamosaurus did. However, with the population of Triceratops, Edmontosaurs, etc, that Tyrannosaurus lived with and hunted, I find that first point very unbelievable, unless the loss of the sauropod some how destroyed the ecosystem balance because the niche couldn't be filled.
During the Jurassic and well into the Mid-Cretaceous Allosauroidea were the large carnivores. They specialized on hunting the big Sauropods and were the Apex predators of their time, meaning they were on top of the food chain. However during the Late Cretaceous another family of large carnivores started replacing the Allosauroidea, the Tyrannosaurs. They became the new apex predators, while the large theropods such as Giganotosaurus or Carcharodontosaurus became extinct. One theory as to why these huge carnivores lost their spot in the food chain is the disappearance of the big Sauropods. They were mostly gone by the end of the Cretaceous in North America, probably due to changing vegetation. Sauropods usually eat ferns, while the end of the Cretaceous saw the rise of deciduous trees. Alamosaurus appearance in North America is often theorized to be an accidental migration event. Somehow a population of these animals managed to migrate from South America to North America, at a time when the two continents weren't connected. When they arrived in North America the big Allosauroidea predators were long extinct and Tyrannosaurs had taken over, who specialized on other type of prey like Hadrosaurs. This meant that Alamosaurus faced no natural predators in North America and could thrive there, which it did judging by the fossil record. We can't see this type of phenomenon a lot today, as humans (accidentially or delibaretly) introduce foreign species into ecosystems where they face no natural predators. For example, when whalers came to South Georgia they had rats onboard their ships, which then went onto the island and found a rich feast of seabirds and no predators to check their population, it was an ecological disaster.
So early there is 3 comments?! Wow I’m the 4th comment!i love your vids btw!
You does amazing videos about parks & back in time series but did alamosaurus live in hell creek im confused??
It's speculation
Alamosaurus is currently only known from Texas. But remains of Triceratops and T-Rex have been found in the same region as Alamosaurus. And who knows perhaps at some points in time during the last few million years of the dinosaurs, herds of Alamosaurus could've (emphasis on could've) migrated to Hell Creek for food and then back to Texas to lay their eggs. If the Serengeti-Masai Mara ecosystem is anything to go by, over 2 million herbivores migrate in a continuous cycle following the rains for fresh grass but they (except maybe some Thompson's Gazelles) all return to the short grass plains of the south-eastern Serengeti to give birth. Speculation yes, but it's possible since you can't have herds of Alamosaurus all staying in Texas otherwise all the plant life would be eaten and trampled to the ground leaving little left for the other resident herbivores.
@@kylecollier7569 oh thank for telling me
@@lauraboatswain3418 no problem.
Wuts the map called
Nublar 2015
I love alamosaurus
But Whyyyyy ~ ?!
Don't Have Small Or Medium Creature
- Pachycephalosaurus
- Ornithomimus (Gallimimus)
- Dakotaraptor (Velociraptor)
- Acheroraptor (Pyroraptor)
Why r u complaining to this?