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American Museum of Natural History (YouTube Channel)
American Museum of Natural History (Official Website)


Dinosaur : any of a group (Dinosauria) of extinct often very large chiefly terrestrial carnivorous or herbivorous reptiles of the Mesozoic era — Merriam-Webster   See also   OneLook


Dinosaurare 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 active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201 million years ago; their dominance continued through the Jurassic and Cretaceous periods. Reverse genetic engineering and the fossil record both demonstrate that birds are modern feathered dinosaurs, having evolved from earlier theropods during the late Jurassic Period. As such, birds were the only dinosaur lineage to survive the Cretaceous–Paleogene extinction event 66 million years ago. Dinosaurs can therefore be divided into avian dinosaurs, or birds; and non-avian dinosaurs, which are all dinosaurs other than birds. — Wikipedia

Dinosaur (Encyclopædia Britannica)

Dinosaur Facts (American Museum of Natural History)
Dinosaur Pages (University of California Museum of Paleontology)
The Dino Directory (Natural History Museum)
Dinosaurs (WolframAlpha)



Talks about Dinosaurs (TED: Ideas Worth Spreading)
Articles about Dinosaurs (Big Think)




Paleontology, also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene epoch (roughly 11,700 years before present). It includes the study of fossils to classify organisms and study their interactions with each other and their environments (their paleoecology). Body fossils and trace fossils are the principal types of evidence about ancient life, and geochemical evidence has helped to decipher the evolution of life before there were organisms large enough to leave body fossils. Estimating the dates of these remains is essential but difficult: sometimes adjacent rock layers allow radiometric dating, which provides absolute dates that are accurate to within 0.5%, but more often paleontologists have to rely on relative dating by solving the “jigsaw puzzles” of biostratigraphy (arrangement of rock layers from youngest to oldest). — Wikipedia

Paleontology (Encyclopædia Britannica)




DDC: 567.90 Dinosaurs (Library Thing)
Subject: Dinosaurs (Library Thing)

Subject: Dinosaurs (Open Library)

LCC: QE 862.D5 Dinosaurs (UPenn Online Books)
Subject: Dinosaurs (UPenn Online Books)

LCC: QE 862.D5 Dinosaurs (Library of Congress)
Subject: Dinosaurs (Library of Congress)

Subject: Dinosaurs (WorldCat)




Dinosaurs (Ology, American Museum of Natural History)
Dinosaurs (Science Trek)

MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources



Dinosaurs (EurekaAlert, American Association for the Advancement of Science)
Dinosaurs (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Dinosaurs (JSTOR)
Dinosaurs (Science Daily)
Dinosaurs (Science News)
Dinosaurs (Phys.org)
Dinosaurs (NPR Archives)


Dinosaur National Monument (National Park Service)
Where did dinosaurs live? (United States Geological Survey)


Dinosaur (USA.gov)


More News …

Dinosaurs News -- ScienceDaily All about dinosaurs. Read about dinosaur discoveries including gigantic meat-eating dinosaurs, earliest dinosaurs and more. Dinosaur pictures and articles.

  • Ancient herbivore's diet weakened teeth leading...
    on June 9, 2023 at 4:57 pm

    Researchers have shed light on the life of the ancient reptile Rhynchosaur, which walked the earth between 250-225 million years ago, before being replaced by the dinosaurs.

  • New dino, 'Iani,' was face of a changing planet
    on June 8, 2023 at 1:58 am

    A newly discovered plant-eating dinosaur may have been a species' 'last gasp' during a period when Earth's warming climate forced massive changes to global dinosaur populations.

  • Multiple species of semi-aquatic dinosaur may...
    on June 1, 2023 at 8:01 pm

    Palaeontologists studying a British dinosaur tooth have concluded that several distinct groups of spinosaurs -- dinosaurs with fearsome crocodile-like skulls -- inhabited southern England over 100 million years ago.

  • 107-million-year-old pterosaur bones: Oldest in...
    on May 30, 2023 at 4:48 pm

    A team of researchers have confirmed that 107-million-year-old pterosaur bones discovered more than 30 years ago are the oldest of their kind ever found in Australia, providing a rare glimpse into the life of these powerful, flying reptiles that lived among the dinosaurs.

  • Dinosaurs were the first to take the perspectives...
    on May 22, 2023 at 5:13 pm

    Understanding that others hold different viewpoints from your own is essential for human sociality. Adopting another person's visual perspective is a complex skill that emerges around the age of two. A new study suggests that this ability first arose in dinosaurs, at least 60 million years before it appeared in mammals. These findings challenge the idea that mammals were the originators of novel and superior forms of intelligence in the wake of the dinosaur extinction.

Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.

  • Ancient herbivore's diet weakened teeth and lead...
    on June 9, 2023 at 12:00 am

    A team of researchers from the University of Bristol have shed light on the life of the ancient reptile Rhynchosaur, which walked the earth between 250-225 million years ago, before being replaced by the dinosaurs.

  • Newly discovered dinosaur, 'Iani,' was face of a...
    on June 7, 2023 at 6:00 pm

    A newly discovered plant-eating dinosaur may have been a species' "last gasp" during a period when Earth's warming climate forced massive changes to global dinosaur populations.

  • A documented case of a crocodile virgin birth
    on June 7, 2023 at 2:31 pm

    A team of entomologists and reptile specialists from Virginia Polytechnic Institute and State University, the Chiricahua Desert Museum, the Illinois Natural History Survey, Reptilandia Reptile Lagoon and Parque Reptilandia has documented a case of a virgin crocodile laying viable eggs. In their paper published in the journal Biology Letters, the group describes their surprise at the discovery of a clutch of eggs laid by an American crocodile who had been kept alone in an enclosure at Parque […]

  • Research reveals ants inflict pain with...
    on June 6, 2023 at 11:23 am

    University of Queensland researchers have shown for the first time that some of the world's most painful ant stings target nerves, like snake and scorpion venom. This research is published in Nature Communications.

  • Germany returns 'stolen' dinosaur fossil to Brazil
    on June 5, 2023 at 8:56 pm

    A fossil from a rare dinosaur that roamed South America 110 million years ago has been returned to Brazil from Germany, ending a diplomatic spat triggered by charges that researchers stole it.


Here are links to pages about closely related subjects.

Knowledge Realm

Terrestrial   (Earth)

Sphere Land, Ice, Water (Ocean), Air, Life (Cell, Gene)
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic

Tree of Life
Microorganism Virus
Prokaryote Archaea, Bacteria
Eukaryote Protist, Fungi, Algae, Protozoa (Tardigrade)
Plant Flower, Tree
Cnidaria Coral, Jellyfish
Cephalopod Cuttlefish, Octopus
Crustacean Lobster, Shrimp
Arachnid Spider, Scorpion
Insect Ant, Bee, Beetle, Butterfly
Fish Seahorse, Ray, Shark
Amphibian Frog, Salamander
Reptile Turtle, Tortoise, Dinosaur
Bird Penguin, Ostrich, Owl, Crow, Parrot
Mammal Platypus, Bat, Mouse, Rabbit, Goat, Giraffe, Camel, Horse, Elephant, Mammoth
Walrus, Seal, Polar Bear, Bear, Panda, Cat, Tiger, Lion, Dog, Wolf
Cetacean Whale, Dolphin
Primate Monkey, Chimpanzee, Human


1.   The resources on this page are are organized by a classification scheme developed exclusively for Cosma.