10 Facts About Dinosaurs That ‘Jurassic Park’ Didn’t Tell You.

by Aswathy Gopinath7 years ago

5 The smallest dinosaur was about 4 inch (10 cm) tall and weighed two pounds – less than a chihuahua.

chihuahua size dinosaurs
Image source: www.telegraph.co.uk

This dinosaur, named the Fruitadens haagarorum, probably lived a 150 million years ago, and fed mainly on plants and insects. According to the director of the Dinosaur Institute of the Natural History Museum, the dinosaur “would have looked like a roadrunner on steroids”, and was tiny enough to dart between larger dinosaurs’ legs unnoticed.(source)

4 Jurassic World got it wrong: velociraptors, contrary to how they were portrayed in the film, were quite small and covered in feathers, and not nearly as scary.

Image credit: Chuang Zhao/University of Edinburgh(taken from)

The discovery of a relative of the velociraptor – called the Zhenyuanlong suni – has indicated that the velociraptor looked quite different from the way they were portrayed in the famous Jurassic Park film series: they would have been no more than five feet long, and would have been covered in bright plumage.(source)

3 The fossil of a mammal was discovered with a dinosaur in its stomach, proving that our Mesozoic ancestors did feed on dinosaurs.

mammals ate dinosaurs
Image credits: AP Photo/Frank Franklin II(taken from)

The 130 million year old fossil of a mammal called Repenomamus robustus was discovered with a small dinosaur in its stomach, which, by proving that early mammals used to feed on dinosaurs, contradicts the idea that early mammals couldn’t attack and feed on a dinosaur due to their size and strength – or the lack of both.(source)


2 DNA has been found to have a 521-year half-life. Therefore, the oldest samples of DNA that can be cloned can be no more than 2 million years old. This rules out any possibility of dinosaurs being replicated, as the youngest dinosaurs lived more than 65 million years ago.

Dinosaur DNA
Image source: mealsandmoves.files.wordpress.com

After the death of an organism, the enzymes begin to break down the bonds formed in DNA, with micro-organisms aiding the decay. However, determining the rate of DNA decay was slightly difficult, until paleogeneticists discovered the half-life of DNA to be 521 years, therefore ruling out any possibility of cloning dinosaurs.(source)

1 Taxonomically, modern-day birds aren’t just thought to be the descendants of dinosaurs, but are considered to BE dinosaurs.

Birds related to dinosaurs
image source: wikipedia

Birds are considered to be the only surviving descendants of dinosaurs. While earlier they were considered to be of a separate class which had evolved from dinosaurs – a superorder of dinosaurs, in fact – they have now been recognised as actually being dinosaurs; they are classified under the subgroup Maniraptora, viz., coelurosaurs, which are theropods, and consequently, dinosaurs. So, what do you know, but dinosaurs really aren’t extinct.(source)

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