Fun Eosinopteryx Facts For Kids

Iram Ashfaq
Jan 31, 2024 By Iram Ashfaq
Originally Published on Sep 23, 2021
Edited by Kidadl Team
Fact-checked by Kidadl Team
Learn these amazing 19 Eosinopterx facts that you will remember forever.
Age: 3-18
Read time: 6.5 Min

A small feathered dinosaur with an unusually long tail, the Eosinopteryx was discovered in China. Paleontologists think that this creature may have had a unique strategy for attracting mates: it probably used its feathery reduced plumage to create visual displays of beauty and coloration attractive to potential partners. The Eosinopteryx with a reduced plumage is a genus of bird-like theropods known from the fossil discovery in China from the Tiaojishan formation by Godefroit, Demuynck, and Dyke. The name means 'dawn feather' and refers to the animal's coloration. It has been suggested that Eosinopteryx were close relatives or descendants of true birds because these creatures had an enlarged quill knuckle - one of several features linking them with Aves. The Eosinopteryx was a small, feathered dinosaur that lived in China during the late Jurassic period. It may have been an ancestor of birds today because it had wings with feathers on them and large eyes for seeing well at night when most dinosaurs were sleeping. It had a long tail with feathers on its end, which likely contributed to flight control and balance while making it look very similar to modern birds of prey like eagles or hawks when they are hunting for food. It had an unusual crest on its head and small legs. There was long feathering displayed on all legs, which suggests that it was primarily arboreal in nature, using these features to escape predators or grasp foliage while climbing trees.

Find more relatable and exciting content about the Staurikosaurus and the Kileskus!

Eosinopteryx Interesting Facts

How do you pronounce 'Eosinopteryx'?

People are unsure of how to say Eosinopteryx correctly. Some believe it is pronounced "ee-oh-sin-uhp-" while others think the pronunciation should be closer to "eh -ocean".

What type of dinosaur was an Eosinopteryx?

The Eosinopteryx was a small, feathered theropod dinosaur that lived during the late Jurassic period.

In which geological period did the Eosinopteryx roam the Earth?

The Eosinopteryx lived during the late Jurassic period, roughly 200 million years ago.

When did the Eosinopteryx become extinct?

When asked about when the Eosinopteryx became extinct, research shows that it is highly likely for this event to have occurred more than 150 million years ago.

Where did an Eosinopteryx live?

The Eosinopteryx theropod of China lived in an environment near trees on the ground, which was likely a forest mostly around China. This dinosaur's name means 'dawn bird'.

What was an Eosinopteryx's habitat?

The Eosinopteryx lived on the forested ground, in subtropical woodlands of China. It was covered in feathers with a lizard-like face and clawed feet.

Who did an Eosinopteryx live with?

Scientists have argued about who the Eosinopteryx of China lived with. They are interested because it sheds light on how dinosaurs were social and communicated with each other, as well as what their relationships looked like. The hypothesis is that they probably lived in groups to protect themselves from predators thanks to pack hunting behavior which was common among many types of ground animals during this time period.

How long did an Eosinopteryx live?

It is difficult to know how long an Eosinopteryx lived. It would have been around 30-40 years, but that can only be hypothesized because it died out over 150 million years ago and there are no living examples on the ground of the species left on Earth today.

How did they reproduce?

Eosinopteryx feathered dinosaurs of China may have reproduced in a similar way to birds, which is very different than other dinosaurs. They laid eggs and sat on them for several weeks until babies hatched out of their shells with reduced plumage.

Eosinopteryx Fun Facts

What did an Eosinopteryx look like?

An Eosinopteryx was a small, feather-theropod that lived in the late Jurassic period based on the fossil that was found. It had feathers covering the wings on its forelimbs and long ankle bones which helped it to climb trees or swoop down from branches onto smaller reptiles that were eating insects at their feet. This strategy allowed this bird-like creature to eat bugs safely out of reach of larger predators like the Allosaurus fragilis.

The Eosinopteryx hand had a shape that would set this theropod apart from others.
*We've been unable to source an image of an Eosinopteryx and have used an image of a Styracosaurus instead. If you are able to provide us with a royalty-free image of an Eosinopteryx, we would be happy to credit you. Please contact us at

How many bones did an Eosinopteryx have?

The Eosinopteryx of China bones had a range of about 40-50 in a complete skeleton. This theropod was one of the smallest dinosaurs that ever lived and it's probably related to birds, which makes sense because we know some bird fossils from the Tiaojishan formation have over 100 different kinds of feathers on them!

How did they communicate?

The Eosinopteryx communicated with each other through chirps. These bird-like dinosaurs were small, feathered animals that had long tails and clawed feet for climbing trees.

How big was an Eosinopteryx?

Eosinopteryx dinosaurs were small, feathered dinosaurs that have been found in the Jehol Group of China. They lived during the late Jurassic period about 130 million years ago and they were probably omnivores or insectivores. The Eosinopteryx is known for being one of the smallest non-avian maniraptoran dinosaurs whose skeleton and fossil discovery was made by Godefroit, Demuynck, and Dyke with an estimated 12 in (30.5 cm) long body range and 7 in (17.8 cm) tall height.

How fast could an Eosinopteryx move?

Paleontologists have estimated that Eosinopteryx brevipenna could move at speeds of up to 28 mph (45 kph). They reached this conclusion by studying the shape and size range of its femur bone, or thigh bone, in comparison with modern animals.

How much did an Eosinopteryx weigh?

Eosinopteryx brevipenna were small, lightweight feathered dinosaurs that weighed only 1.1 lb (0.5 kg).

What were the male and female names of the species?

Both males and females of this species are known as Eosinopteryx dinosaurs!

What would you call a baby Eosinopteryx?

These babies, which had a cute feather on its skeleton upon discovery, do not have a specific scientific term and are popularly referred to as baby Eosinopteryx.

What did they eat?

Although scientists have found that the Eosinopteryx brevipenna had a carnivorous diet, it couldn't tackle larger dinosaurs. It usually had a diet including fish and other small animals such as birds or insects.

How aggressive were they?

The Eosinopteryx brevipenna had a reduced plumage and was probably not aggressive, because it had no teeth based on the Eosinopteryx evolutionary line of evidence. It had small legs and also didn't have very large wings that could help it glide away if another animal approached it. It would have been easy prey for predators like dinosaurs and raptors to attack!

Did you know...

There have been many questions as to whether or not the Eosinopteryx could fly. Some paleontologists suggest that it was a glider, meaning wings were used for control and balance but didn’t provide much propulsion through the air. Other scientists argue that this creature flew with its feathers outstretched rather than tucked in close against its body like most modern-day birds do today when they glide between trees before taking off into flight.

When was the Eosinopteryx discovered?

In 2014, a small late Jurassic-era bird was discovered in China. This new species is the earliest known example of an avian dinosaur with feathers for flight and it dates back to about 200 million years ago.

Could the Eosinopteryx fly?

The Eosinopteryx brevipenna with a reduced plumage is a feathered dinosaur that lived during the late Jurassic period with fossils formed during the Tiaojishan formation. While it's not clear whether or not this little guy was capable of flight, its feathers were certainly optimized for insulation and sexual selection rather than aerial locomotion.

Here at Kidadl, we have carefully created lots of interesting family-friendly dinosaur facts for everyone to discover! Learn more about some other creatures from our Atrociraptor facts or Pawpawsaurus facts for kids.

You can even occupy yourself at home by coloring in one of our free printable Eosinopteryx coloring pages.

Main image by El fosilmaníaco

Eosinopteryx Facts

What Did They Prey On?

Fish, birds, and small insects

what Type of Animal were they?


Average Litter Size?


What Did They Look Like?

Gray, green, orange, and blackish white

How Much Did They Weigh?

1.1 lb (0.5 kg)

Skin Type


How Long Were They?

12 in (30.5 cm)

How Tall Were They?

7 in (17.8 cm)




Clade: Dinosauria





Scientific Name

Eosinopteryx brevipenna

What Were Their Main Threats?

Natural disasters

What Habitat Did They Live In?

Grass plains, the ground, forests, open meadows, and tundras

Where Did They Live?

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Written by Iram Ashfaq

Bachelor of Dental Surgery, Master of Public Health

Iram Ashfaq picture

Iram AshfaqBachelor of Dental Surgery, Master of Public Health

With a Bachelor's degree in Dental Surgery from Shaney Institute of Health Sciences and a Master's degree in Public Health from Imperial College London, Iram is a highly qualified and accomplished writer from Srinagar, India. Over the course of a year, she has acquired multiple writing certifications, focusing on health sciences and research studies. Prior to joining Kidadl, Iram gained valuable experience working as a content writer for Indian firms and interning at a New York-based company. Her expertise and passion for writing shine through in her ability to create compelling content across a variety of topics.

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