extinction event ending the Mesozoic Era
Factsheet
Named after Cretaceous
Paleogene
Paleogene
Named after Cretaceous
Paleogene
Paleogene
Wikipedia
en.wikipedia.org › wiki › Cretaceous–Paleogene_extinction_event
Cretaceous–Paleogene extinction event - Wikipedia
4 days ago - The event appears to have affected all continents at the same time. Non-avian dinosaurs, for example, are known from the Maastrichtian of North America, Europe, Asia, Africa, South America, and Antarctica, but are unknown from the Cenozoic anywhere in the world.
Natural History Museum
nhm.ac.uk › discover › how-an-asteroid-caused-extinction-of-dinosaurs.html
How an asteroid ended the age of the dinosaurs | Natural History Museum
How did dinosaurs become extinct? Explore the Cretaceous extinction event and the role of the Chicxulub impact in the death of dinosaurs (except birds).
Videos
03:55
What Exactly Killed The Dinosaurs? | Earth | BBC Earth Science ...
00:58
How Did Dinosaurs Actually Go Extinct? - YouTube
12:40
How We Figured Out an Asteroid Killed the Dinosaurs - YouTube
09:55
How Long Did The Dinosaurs Actually Survive After The Asteroid? ...
02:27
What Happened to the Dinosaurs? | CBC Kids - YouTube
11:40
How The Dinosaurs Actually Died - YouTube
Reddit
reddit.com › r/dinosaurs › how did all the dinosaurs die? why didn’t a good amount stay alive just as other animals did?
r/Dinosaurs on Reddit: How did all the dinosaurs die? Why didn’t a good amount stay alive just as other animals did?
November 11, 2023 - Basically if you couldn't burrow down a foot or two (ie small non-avian dinos, mammals), hide in ponds without coming up for air frequently (crocodilians, amphibians) or get into caves, practically all the animals probably died on that literal first day. There were probably some small non-avian dinosaurs which survived, but then you get into the issue with what they were going to eat with the lack of sunlight and live vegitation.
Natural History Museum
nhm.ac.uk › discover › dinosaur-extinction.html
What killed the dinosaurs? | Natural History Museum
Strong evidence suggests that a huge asteroid impact caused the mass dinosaur extinction 66 million years ago.
Creation Museum
creationmuseum.org › blog › 2024 › 06 › 05 › what-happened-to-dinosaurs
What Happened to the Dinosaurs? | Creation Museum
Paleontologists who believe that God created the earth in six days as recorded in the Bible have a different answer to this question about dinosaurs. These scientists conclude that most of the dinosaurs died in the global flood. So why did the ...
American Museum of Natural History
amnh.org › exhibitions › dinosaurs-ancient-fossils › extinction
Mass Extinction on Earth, 65M Years Ago: What Happened? | AMNH
Most agree that the... Article Survivors Global forest fires. Acid rain. Tsunamis. Skies dark for months or years with volcanic ash. How could anything have survived? Roughly... Article Dinosaurs Survive! Not all dinosaurs died out 65 million years ago.
Answers in Genesis
answersingenesis.org › dinosaurs › extinction › dinosaur-extinction › how-did-dinosaurs-die
How Did Dinosaurs Die? | Answers in Genesis
Dinosaurs disappear above the K-T boundary—regardless of the source of its iridium—because the Flood and its aftermath dumped additional sediment on top of those dinosaur-bearing layers that were formed when their habitats were overwhelmed ...
The New Yorker
newyorker.com › magazine › paleontologists › the day the dinosaurs died
The Day the Dinosaurs Died | The New Yorker
March 29, 2019 - DePalma’s find was in the Hell Creek geological formation, which outcrops in parts of North Dakota, South Dakota, Montana, and Wyoming, and contains some of the most storied dinosaur beds in the world. At the time of the impact, the Hell Creek landscape consisted of steamy, subtropical lowlands and floodplains along the shores of an inland sea.
Britannica
britannica.com › science › earth science, geologic time & fossils › dinosaurs
What Happened to the Dinosaurs? | Britannica
June 13, 2025 - One day 66 million years ago, an asteroid the size of a mountain struck near the Yucatán Peninsula with an explosive force equivalent to 100 trillion tons of TNT. In that cataclysmic instant, the 165-million-year reign of the dinosaurs came ...
HISTORY
history.com › home › articles › why did the dinosaurs die out? - causes & dates
Why Did the Dinosaurs Die Out? - Causes & Dates
The Cretaceous-Tertiary extinction event, or the K-T event, is the name given to the die-off of the dinosaurs and other species that took place some 65.5 million years ago. For many years, paleontologists believed this event was caused by climate and geological changes that interrupted the dinosaurs’ food supply.
Published May 28, 2025
Britannica
britannica.com › science › earth science, geologic time & fossils › dinosaurs
Dinosaur - Extinction Causes, Evidence, & Theory | Britannica
July 26, 1999 - It was not only the dinosaurs that disappeared 66 million years ago at the Cretaceous–Tertiary, or K–T, boundary (also referred to as the Cretaceous–Paleogene, or K–Pg, boundary).
Popular Mechanics
popularmechanics.com › science › our planet › scientists could never agree on how the dinosaurs died. so they let a non-human decide.
How Did the Dinosaurs Die? - Scientists Finally Have an Answer
October 2, 2023 - Some 66 million years ago, all dinosaurs (of the non-avian variety) met their end on planet Earth.
USGS
usgs.gov › faqs › where-did-dinosaurs-live
Where did dinosaurs live? | U.S. Geological Survey
Dinosaurs lived on all of the continents. At the beginning of the age of dinosaurs (during the Triassic Period, about 230 million years ago), the continents were arranged together as a single supercontinent called Pangea. During the 165 million years of dinosaur existence this supercontinent ...
USGS
usgs.gov › faqs › when-did-dinosaurs-become-extinct
When did dinosaurs become extinct? | U.S. Geological Survey
Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years. If all of Earth time from the very beginning of the dinosaurs to today were compressed into 365 days (one calendar year), the dinosaurs appeared January ...
Science History Institute
sciencehistory.org › home › distillations magazine › the dinosaurs died in spring
The Dinosaurs Died in Spring | Science History Institute
May 20, 2024 - The rock, at least six miles in width, rushed toward the planet at 46,000 miles per hour, too fast to have been seen by the dinosaurs it annihilated. Shattering rocks to a depth of 18 miles, it unleashed a tsunami and set wildfires for hundreds of miles around.
National Geographic
nationalgeographic.com › home › science › why did the dinosaurs go extinct?
Why did the dinosaurs go extinct?
Their key piece of evidence is an oddly high amount of the metal iridium in what’s known as the Cretaceous-Paleogene, or K-Pg, layer—the geologic boundary zone that seems to cap any known rock layers containing dinosaur fossils. Iridium is relatively rare in Earth's crust but is more abundant in stony meteorites, which led the Alvarezs to conclude that the mass extinction was caused by an extraterrestrial object.
Published May 4, 2021
Reddit
reddit.com › r/paleontology › when did the dinosaurs go extinct... exactly?
r/Paleontology on Reddit: When did the dinosaurs go extinct... exactly?
January 3, 2024 -
Some questions I've been tinking about.
How quickly did every last dinosaur go extinct? Were there many species of dinosaur that held on multi generationally, if so for how long? Is there, or would there ever be evidence of dinosaurs more recent than 66 mya? Was there any part of earth that was kinda okay-ish for any amount of time after the impact?
Dinosaur nerds, help me here please.
Edit: yes I know about the origin of birds thank you, I shouldn't have clarify 'non-avian' dinosaurs because we all know.
Thank you all for your responses, I got quite a lot. It was more of a discussion than anything, and a question as to what we do currently know and what we could possibly know.
Thanks everybody
Top answer 1 of 26
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There are no dinosaur fossils found above the K-T line. Unless....you count birds and most people these days do. There is no way to know how many 'generations' it took for them to completely go extinct as dating techniques have a large enough fudge factor, that you are probably looking at hundreds within that fudge. They can narrow this down by using multiple techniques, but you'd still be looking at several hundred thousand years of variance.
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We can give estimates to the million years mark, but as of now we don’t have the technology to go as specific as generations. Birds are still around so a branch of Dinosaurs do still live on.
UCMP
ucmp.berkeley.edu › diapsids › extinction.html
What Killed The Dinosaurs?
Surely ever since the first fossils of obviously extinct animals were found, humankind has wondered: "Why did they die?" A poignant question, for it has relevance to us if extinct animals were wiped out by some catastrophe, couldn't that just as easily happen to us?
National Geographic
nationalgeographic.com › home › animals › here’s what happened the day the dinosaurs died
Here’s What Happened the Day the Dinosaurs Died | National Geographic
May 3, 2021 - Sixty-six million years ago, an asteroid struck eastern Mexico and wiped out the dinosaurs.
Dinosaur World Live
dinosaurworldlive.com › blog › top-reasons-why-dinosaurs-became-extinct
TOP REASONS WHY DINOSAURS BECAME EXTINCT
The theory is that over tens of thousands of years, the dust and ash that entered the atmosphere slowly became so thick that it blocked the sunlight and caused plants to die. This in turn caused the plant-eating dinosaurs to die out, and then caused the meat-eaters that hunted them to starve.