Current Events > So T Rex could not have run as fast as portrayed in jurassic park, right?

(+) Yeah! (+)

1. Jurassic Park probably underestimated the speed.
2. Elephants can go pretty fucking fast. Top estimates are 25 mph. That's only slightly slower than Usain Bolt's top sprinting speed.
3. Usain Bolt would probably break his current sprinting record if he was being chased by an elephant. Just saying.

another interesting fact. Scientists estimate that 2.5 billion t rexes have ever lived on earth. 20,000 individuals at 1 time. and they existed for 2.5 million years

I tried researching dinosaur population in the past and it's probably the least accurate anything we know about history. You may as well just pull numbers out of your ass for any given dinosaur as long as it "sounds about right"

is your username from the t rex? is that why you're so interested in them?

another interesting fact. Scientists estimate that 2.5 billion t rexes have ever lived on earth. 20,000 individuals at 1 time. and they existed for 2.5 million years

We don't even know for sure if they were warm or cold blooded. We can't be sure how fast they ran.

isnt it looking almost for certain that dinos were warm blooded? yeah, not 100 perc. though

Usain Bolt would probably break his current sprinting record if he was being chased by an elephant. Just saying.

Life uh, finds a way....

Yep. There was some confusion as early dinosaur research painted them as reptiles. "Tyrannosaurus" itself literally means Tyrant Lizard. This itself was mostly assumptions based on how their egg laying habits were similar to reptiles as opposed to the bird nests we're familiar with.

But it turns out we were super wrong about all that and they're actually birds. The Cassowary is the closest thing to what a dinosaur would have actually looked like:

https://www.youtube.com/watch?v=mi5hp4gR_fg

Did you know it's actually kinda hard to just find straight up footage of cassowaries that aren't heavily edited with documentary audio?

another interesting fact. Scientists estimate that 2.5 billion t rexes have ever lived on earth. 20,000 individuals at 1 time. and they existed for 2.5 million years

weren't the theropods more closely related to birds? even their feet are like giant chicken feet. The t rex for sure. Maybe the sauropods were more closely related to crocodiles or something

When you talk about how fast something is, do you take into account how big that things steps are?

I guess probably because speed is usually measured in distance traveled vs time, right?

Well that was kind of an over generalization on my part. Stuff like stegosaurus probably was a reptile but they're also not likely related to anything today as they went extinct for just sucking at Darwin. I'm not sure about things like triceratops or other four legged dinos.

Was a T-Rex really as small as a large elephant?

I mean, I know Elephants are big, but they're still nowhere near what I expect for a T Rex

didn't stegosaurus live for over 5 million yrs ? iirc t rex lived for like 2 or 3. so stegosaurus was very successful

Tyrannosaurus died in an extinction event. Stegosaurus died because it sucked at Darwin 100 million years before the chicxulub asteroid hit.

weren't the theropods more closely related to birds? even their feet are like giant chicken feet. The t rex for sure. Maybe the sauropods were more closely related to crocodiles or something

didn't stegosaurus last longer than most dinosaur species though?

I don't know. The average lifespan of a species is 500,000 to 3 million years before being replaced by an evolutionary descendant.

The stegosaurus died out because it could only eat low while animals that could eat high could also eat low.

Were dinosaurs reptiles, or were the descendants of dinosaurs? I mean, mammals descended from reptiles at one point too

Were dinosaurs reptiles, or were the descendants of dinosaurs? I mean, mammals descended from reptiles at one point too

Would T Rex need to run fast?

not if its prey was real big and slow, too. So t rex was not the largest theropod ever? it was spinosaurus? iirc t rex weighed more. Any other one than spinosaurus was bigger?

not if its prey was real big and slow, too. So t rex was not the largest theropod ever? it was spinosaurus? iirc t rex weighed more. Any other one than spinosaurus was bigger?

https://en.wikipedia.org/wiki/Giganotosaurus

I see you make a ton of posts about evolution and specifically about dinosaurs.

Out of curiosity, is that something you are really interested in as a hobby or are you studying this seriously in school/career?

yeah but iirc of the largest theropods, spinosaurus , gigantosaurus. t rex fossils are easily the most common. They must have reproduced fast , they existed for like 3 million yrs and estimated 2.5 billion of them ever lived. Supposedly if fewer than 100 million of them ever lived. We might have never known of their existence.

not sure about the others, but T rex took about 18 years to reach adult size, that's kinda slow

where did you get that info?