clade of archosaurian reptiles (Archosauria)

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Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing … Wikipedia
Factsheet
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Factsheet
Scientific classification
Kingdom: Animalia
Phylum: Chordata
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Wikipedia
en.wikipedia.org β€Ί wiki β€Ί Dinosaur
Dinosaur - Wikipedia
1 week ago - Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research.
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National Geographic Kids
kids.nationalgeographic.com β€Ί animals β€Ί prehistoric
Dinosaurs | National Geographic Kids
Explore the incredible world of dinosaurs through fascinating facts, amazing art, and the latest science.
Discussions

There’s something very vindicating that Pachycephalosaurus is once again widely believed to have used those skulls to headbutt. : Dinosaurs
🌐 r/Dinosaurs
About the two Triceratops species. Did both Triceratops prorsus and horridus live with Tyrannosaurus rex? Or did the predator only ever coexisted with one species? : Dinosaurs
🌐 r/Dinosaurs
Share your favorite dinosaur facts with someone ignorant!
Most of your favorite dinosaurs didn’t live a the same time. They were mostly spread across 200 million years or so, and across the entire globe. Notable exceptions: allosaurus and stegosaurus lived together, as well as Tyrannosaurus rex and triceratops did. More on reddit.com
🌐 r/Paleontology
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126
June 5, 2022
What undiscovered dinosaur ""types"" do you believe existed?
Not dinosaurs but I think it’s plenty plausible that there’s a ton of pterosaur body plans we have yet to uncover. They’re an extremely diverse group as is. More on reddit.com
🌐 r/Paleontology
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September 7, 2024
People also ask

Do dinosaurs exist today?
It is generally accepted that modern birds are descendents of dinosaurs. Evidence for this theory first arose from the fossil records of the ArchaeopteryxArchaeopteryx and the Xiaotingia, two genera of theropod dinosaurs that displayed similar anatomical structures to birds.
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britannica.com
britannica.com β€Ί science β€Ί earth science, geologic time & fossils β€Ί dinosaurs
Dinosaur | Definition, Types, History, Names, & Facts | Britannica
How did most dinosaurs go extinct?
The decline of dinosaurs was most likely caused by many different factors. A popular theory is that an asteroid crashed into the YucatΓ‘n Peninsula 66 million years ago, causing enough terrestrial and asteroid material to be ejected into the atmosphere that sunlight was possibly blocked for several years. This would have severely impacted plant life and subsequently brought about the end of most dinosaurs.
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britannica.com
britannica.com β€Ί science β€Ί earth science, geologic time & fossils β€Ί dinosaurs
Dinosaur | Definition, Types, History, Names, & Facts | Britannica
What is the largest dinosaur?
Although estimates vary, one of the contenders for the largest dinosaur is the Argentinosaurus. Discovered in Argentina in 1987, the Argentinosaurus is estimated to have been 37 to 40 metres (121 to 131 feet) long and weighed up to 100 metric tons.
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britannica.com
britannica.com β€Ί science β€Ί earth science, geologic time & fossils β€Ί dinosaurs
Dinosaur | Definition, Types, History, Names, & Facts | Britannica
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American Museum of Natural History
amnh.org β€Ί dinosaurs β€Ί types-of-dinosaurs
Types of Dinosaurs | American Museum of Natural History
Non-avian dinosaurs (all dinosaurs besides birds), which are now extinct, varied greatly in shape and size. Some weighed as much as 80 tons and were more than 120 feet long. Others were the size of a chicken and weighed as little as 8 pounds. All non-avian dinosaurs lived on land.
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Britannica
britannica.com β€Ί science β€Ί earth science, geologic time & fossils β€Ί dinosaurs
Dinosaur | Definition, Types, History, Names, & Facts | Britannica
1 month ago - Dinosaur, the common name given to a group of reptiles, often very large, that first appeared roughly 245 million years ago and thrived worldwide for nearly 180 million years. Most died out by the end of the Cretaceous Period.
Find elsewhere
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Jurassic World Evolution
jurassicworldevolution.com β€Ί 3 β€Ί dinosaurs
Dinosaurs - Jurassic World Evolution 3
October 21, 2025 - Discover all 95 dinosaurs and prehistoric animals featured in Jurassic World Evolution 3, including their stats and preferences.
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Australian Museum
australian.museum β€Ί learn β€Ί dinosaurs
Dinosaurs and their relatives - The Australian Museum
Dinosaurs are classified as a group of reptiles, although some of their features are found in mammals and birds living today rather than in reptiles.
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IMDb
imdb.com β€Ί title β€Ί tt0101081
Dinosaurs (TV Series 1991–1994) - IMDb
April 26, 1991 - With Stuart Pankin, Allan Trautman, Jessica Walter, Leif Tilden. This show follows the life of a family of dinosaurs, living in a modern world. They have televisions, refrigerators, et cetera.
Rating: 7.5/10 ​ - ​ 23.5K votes
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Wikipedia
en.wikipedia.org β€Ί wiki β€Ί Dinosaurs_(TV_series)
Dinosaurs (TV series) - Wikipedia
2 weeks ago - Dinosaurs is an American family sitcom television series that aired on ABC from April 26, 1991, to July 20, 1994. The show, about a family of anthropomorphic dinosaurs, was produced by Michael Jacobs Productions and Jim Henson Productions in ...
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Natural History Museum
nhm.ac.uk β€Ί discover β€Ί dino-directory.html
The Dino Directory | Natural History Museum
From slow, plant-eating giants to fierce scavengers and hunters, dinosaurs once dominated the land.
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UCMP
ucmp.berkeley.edu β€Ί diapsids β€Ί dinosaur.html
The Dinosauria
Dinosaurs, one of the most successful groups of animals (in terms of longevity) that have ever lived, evolved into many diverse sizes and shapes, with many equally diverse modes of living. The term "Dinosauria" was invented by Sir Richard Owen in 1842 to describe these "fearfully great reptiles," ...
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DinosaurPictures.org
dinosaurpictures.org
DinosaurPictures.org - Awesome Dinosaur Pictures
Best dinosaur images and info on the internet. Curated high quality database of dinosaurs
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Natural History Museum
nhm.ac.uk β€Ί discover β€Ί what-are-dinosaurs.html
What are dinosaurs? | Natural History Museum
Dinosaurs are a group of reptiles that dominated the land for over 140 million years (more than 160 million years in some parts of the world).
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National Geographic
education.nationalgeographic.org β€Ί resource β€Ί dinosaurs
Dinosaurs
Dinosaurs have long captured our imagination as reptilian creatures with menacing teeth, claws, spikes, and hammering, bony bulbs. They roamed Earth roughly 175 million years ago, and most were wiped out by an extinction event roughly 65 million ...
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American Museum of Natural History
amnh.org β€Ί dinosaurs
Dinosaurs | American Museum of Natural History
Dinosaurs are a group of reptiles that first appeared about 245 million years ago.
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Live Science
livescience.com β€Ί animals β€Ί extinct-species β€Ί dinosaurs
Dinosaurs: News, features and articles | Live Science
October 30, 2025 - Researchers have unearthed two dinosaur "mummies" in the badlands of Wyoming, confirming duck-billed dinosaurs had hooves, alongside a string of other discoveries.
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USGS
usgs.gov β€Ί faqs β€Ί 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 ...
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Wikipedia
en.wikipedia.org β€Ί wiki β€Ί List_of_dinosaur_genera
List of dinosaur genera - Wikipedia
6 days ago - Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of ...
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ScienceAlert
sciencealert.com β€Ί home β€Ί what are dinosaurs?
What Are Dinosaurs? : ScienceAlert
May 19, 2020 - Dinosaurs are a diverse group of mostly land-based animals that are related to today's reptiles and birds. In fact, while dinosaurs are commonly seen as extinct and known only by their fossils, paleontologists technically include modern birds ...
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Reddit
reddit.com β€Ί r β€Ί Dinosaurs
Dinosaurs: They Rock!
September 20, 2008 - This is a sub for dinosaurs.