Current Events > Why do you believe that dinosaurs grew to such massive sizes?

(+) Yeah! (+)

have heard some scientists hypothesize that it was because of great selective pressure. Like the meat eaters had to also grow big so they could eat the plant eaters. Does this sound plausible to you?

No.

For one thing, the atmosphere was more oxygen rich back then. Also the planet was warmer and more damp so good for large reptilians that spend time near water.

have heard some scientists hypothesize that it was because of great selective pressure. Like the meat eaters had to also grow big so they could eat the plant eaters. Does this sound plausible to you?

No.

For one thing, the atmosphere was more oxygen rich back then. Also the planet was warmer and more damp so good for large reptilians that spend time near water.

No, plant eaters grow big to avoid getting eaten. It happens today too.

Partially. There was actually less oxygen back then (something like 15% vs 21%) and the oxygen hypothesis has largely been debunked.

They evolved that way because of their environment. There were still lots of small dinosaurs and some of the biggest animals ever are alive today.

Rising levels of oxygen in the atmosphere hundreds of millions of years ago helped dinosaurs in North America to flourish, scientists have found.
Levels of the gas rose by nearly a third in three million years, which experts say is very rapid in geological terms.
Presenting their findings at the Goldschmidt Geochemistry conference in Barcelona, the researchers said this may have set the scene for sauropods and the Chindesaurus to expand into the tropics of North America and elsewhere.

The oxygen rise also coincided with a drop in carbon dioxide.

dinosaurs were not real

There are millions of flat earthers around the world.

Yeah, the meat eaters had to grow the biggest. You can see this in action by looking at the largest animals alive today, like whaleswait, no, elephantsshit, I meant rhinosactually if you look at hipposfuck.

Yeah, the meat eaters had to grow the biggest. You can see this in action by looking at the largest animals alive today, like whaleswait, no, elephantsshit, I meant rhinosactually if you look at hipposfuck.

Was gravity smaller back in the day

wasn't there like a 2 ft dragonfly? Forgot when that dragonfly was, before the dinosaurs? Don't remember any other ancient insects besides that one

yeah and centipedes several feet long

Is that poster really serious?

The blue whale is the largest animal to ever exist right?

There wasnt always more oxygen in the atmosphere.

yes

have heard some scientists hypothesize that it was because of great selective pressure. Like the meat eaters had to also grow big so they could eat the plant eaters. Does this sound plausible to you?

How is this logical though? It's not like living beings choose to grow larger. That's not how evolution works.

how many yrs ago did those 2 live? What you read about these 2 on wikipedia or something?

Carboniferous Period 350-300 million years ago

Is it possible to grow giant insects by keeping them in higher oxygen enclosure and then letting them breed for many generations?

I really want to see a giant dragonfly one day

Oh and giant praying mantises too. The ultimate fighter if it ever reaches 6 ft tall

For more info on giant bugs, look for a documentary called Walking With Monsters. It's a prequel to Walking With Dinosaurs

https://en.wikipedia.org/wiki/Walking_with_Monsters?wprov=sfla1

you area a big fan of dinosaur documentaries? Have you ever seen one called clash of the dinosaurs? Iirc most of the major ones can be found on youtube

I don't think i have seen that one