How Long Did The Dinosaurs Actually Survive After The Asteroid?

People often ask about how bad the asteroid that struck the dinosaurs was, or what would happen if it hit earth today, but no one's really asked just how long the dinosaurs survived after d-day...

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Artwork in thumbnail by James McKay

0:00 The Most Violent Mass Extinction
1:00 How Well-Off Were Dinosaurs When The Asteroid Hit?
1:29 All The Terrible Ways The Asteroid Killed
3:15 Lower Survival Estimates
4:32 Longer Estimates
6:04 Evidence Dinosaurs Survived For 500,000 Years
8:30 What If They Did Survive?
9:09 The LAST Dinosaur Recognized By Science
9:25 What About Other Mesozoic Animals (Mosasaurs/Pterosaurs/Etc?)

Dreamer by Hazy
/ hazy_music

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[HumbleAshe]

The gradual decline of smaller pockets of dinosaurs post-asteroids is a sad prospect to try to picture; rare beasts just keeping on going, and persisting on in spite of their situation. A few images I remember from older documentaries still stuck with me: a recently hatched baby Alamosaurus wandering a bone graveyard of adults, and a lone raptor waiting under shelter from the snow, uncertain of its own future in the long winter.

On the flip side at least, the fact that smaller creatures and plants still survived such a cataclysmic event and subsequent winter is always impressive to me.

[itswizardtime]

Since nobody knows what day the Dinosaurs died, I'll drink everyday in case one of these days is the anniversary

[goatsplitter]

As an American, I thank you for relating something to the speed of a bullet so that I can understand how fast things move.

[weilim]

Sharks were wondering "WTF is going on up there?"

[ysndr]

"28x AK's bullet" is a measurement i never expected

[laurencewinch-furness]

India was a long way from the impact site, and had a tropical climate that might have made it easier for non avian dinosaurs to pull through, had the Deccan traps not erupted. That's an interesting alternate history to consider, imagine a dinosaur dominated ecosystem continuing while mammals take over the rest of the world as in our timeline, only for the two worlds to meet when India finally collided with Asia

[CoolSs]

Still the most controversial patch change in the history of the game.

[noterrormanagement]

The ancestors of all modern birds where metal AF for surviving all of this.

[supertrike]

It's depressing thinking that non avian dinosaurs still endured the apocalypse thousands of years after the asteroid hit and were so close to surviving into the paleogene, but simply weren't lucky enough

[chewsdaym]

It’s kinda sad to think about, but at one point, there was only a single dinosaur left on the entire planet. And I don’t mean birds, I mean what you think of as a dinosaur

[buttons]

Am I the only one losing my mind over the t-rex at 1:24 sittin down and havin a snack? It's so cute and I need to know I'm not alone on this.

[xanthippus]

I see some dinosaurs flying outside my window right now.

[BoyBlunder]

It's sad to think that on some day in the ancient past, the last lonely non-avian dinosaur drew its final breath, unable to comprehend the absolute destruction that decimated its world and changed it beyond recognition.

[Baso-sama]

8:56 i was not ready for this amount of cuteness

[stoogeonthaloose]

"Slowly dropped like flies"
"Dropped like flies" means they died in quick succession.

[Dodgerzden]

So what happened to the humans that were living at the time? And don't tell me humans and dinosaurs didn't live at the same time. I urge you to watch the docuseries called "The Flintstones" that proves otherwise.

[girlbuu]

"28 times greater than that of an AK-47 bullet"
HEY, no Russian measurements. American only.
"10 billion Hiroshimas"
That's better.

[MrJoe]

I went to a site in Poland where the KPG boundary is preserved, and what's funny about the site is that you can find perfectly preserved Belemnites a good 30-50 centimetre above the boundary, even though it's a carbonate formation where the sedimentation was obviously much slower after the KPG event.

It is possible these are redeposited, but the one I got from there is so prestinely preserved you can still see the imprints of blood vessels on the Belemnites shell. So this was likely a 'Dead clade walking'. one of the, if not The, last species of a clade that survived the extinction event, but eventually was out competed in the new world that followed.

[andreasherg]

Finally a video that is not just like "Birds are dinosaurs so they actually survived till today" but answering the question of how long dinosaurs that we associate as being dinosaurs actually survived.

[A_Bottle-Of_Orange_Crush]

I have it on good authority that Littlefoot and friends are STILL singing songs and having fun in the Great Valley.