A Brief History of Dinosaurs - Deepstash
How to Live Sustainably

Learn more about personaldevelopment with this collection

How to make sustainable choices in everyday life

Identifying ways to reduce waste and conserve resources

Understanding the impact of human actions on the environment

How to Live Sustainably

Discover 99 similar ideas in

It takes just

14 mins to read

Dinosaurs ruled the Earth for 175 million years

Dinosaurs ruled the Earth for 175 million years

Dinosaurs first appeared between 247 and 240 million years ago. An extinction event wiped them out 65,5 million years ago, except for the avian dinosaurs.

Scientists think the extinction was likely because of an asteroid impact, chemicals from erupting volcanoes, climate change and other factors.


162 reads

Experts believe birds are living dinosaurs

Fossils reveal that some of the more advanced dinosaurs had feathers or featherlike body covering.

  • Archaeopteryx was considered the first bird but probably couldn't fly far.
  • Pterosaurs - extinct flying reptiles - were not dinosaurs although they were close relatives of dinosaurs. They had hollow bones, relatively large brains and eyes, and skin flaps extended along their arms.


117 reads

Two orders of dinosaurs

In 1842, palaeontologist Richard Owen coined the term dinosaur. The Greek deinos means "terrible," and sauros means "lizard" or "reptile."

Based on the structure of the hipbones, dinosaurs are classified into two orders:

  • Saurischians. These "reptile-hipped" dinosaurs have a pelvis that points forward. They are often long-necked, have large and sharp teeth, long second fingers, and a first finger that point away from the rest of the fingers.
  • Ornithischians are beaked herbivores and milder.


70 reads


Well-known dinosaurs like the Tyrannosaurus rex, Deinonychus and Velociraptor fall into this order. Saurischians are divided into two groups.

  • Sauropods are four-legged herbivores. They had long heads, long necks and long tails. Leaf-eating Apatosaurus, Brachiosaurus and Diplodocus fall into this family.
  • Theropods are two-legged carnivores. There are some of the most fearsome dinosaurs, including Allosaurus and T. rex.


68 reads


Ornithischians include horned and frilled Triceratops, spiked Stegosaurus and armoured Ankylosaurus.

They often lived in herds and were prey to the larger species of dinosaurs.


62 reads

Dinosaurs: Family tree update

In 2017, a study suggested that this hip-oriented classification was incorrect.

Theropods are likely related to the ornithischian dinosaurs. The theropods and Ornithischia form a newly identified group known as Ornithoscelida. If this is correct, it may explain why both theropods and Ornithischia have feathers, while other dinosaurs don't.


82 reads



Social media evangelist. Coffee maven.


Explore the Worldโ€™s

Best Ideas

200,000+ ideas on pretty much any topic. Created by the smartest people around & well-organized so you can explore at will.

An Idea for Everything

Explore the biggest library of insights. And we've infused it with powerful filtering tools so you can easily find what you need.

Knowledge Library

Powerful Saving & Organizational Tools

Save ideas for later reading, for personalized stashes, or for remembering it later.

# Personal Growth

Take Your Ideas


Organize your ideas & listen on the go. And with Pro, there are no limits.

Listen on the go

Just press play and we take care of the words.

Never worry about spotty connections

No Internet access? No problem. Within the mobile app, all your ideas are available, even when offline.

Get Organized with Stashes

Ideas for your next work project? Quotes that inspire you? Put them in the right place so you never lose them.


2 Million Stashers


5,740 Reviews

App Store


72,690 Reviews

Google Play

Ashley Anthony

This app is LOADED with RELEVANT, HELPFUL, AND EDUCATIONAL material. It is creatively intellectual, yet minimal enough to not overstimulate and create a learning block. I am exceptionally impressed with this app!



Donโ€™t look further if you love learning new things. A refreshing concept that provides quick ideas for busy thought leaders.


Shankul Varada

Best app ever! You heard it right. This app has helped me get back on my quest to get things done while equipping myself with knowledge everyday.


Sean Green

Great interesting short snippets of informative articles. Highly recommended to anyone who loves information and lacks patience.


Ghazala Begum

Even five minutes a day will improve your thinking. I've come across new ideas and learnt to improve existing ways to become more motivated, confident and happier.


Giovanna Scalzone

Brilliant. It feels fresh and encouraging. So many interesting pieces of information that are just enough to absorb and apply. So happy I found this.


Laetitia Berton

I have only been using it for a few days now, but I have found answers to questions I had never consciously formulated, or to problems I face everyday at work or at home. I wish I had found this earlier, highly recommended!


Jamyson Haug

Great for quick bits of information and interesting ideas around whatever topics you are interested in. Visually, it looks great as well.


Read & Learn

20x Faster





Access to 200,000+ ideas


Access to the mobile app


Unlimited idea saving & library



Unlimited history



Unlimited listening to ideas



Downloading & offline access



Personalized recommendations



Supercharge your mind with one idea per day

Enter your email and spend 1 minute every day to learn something new.


I agree to receive email updates