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Protopteryx

Say it: PRO-toe-TER-iks
Name means: “primitive feather”1
Ate: MeatEarly birdsEarly Cretaceous

Protopteryx was a tiny early bird that lived about 131 million years ago in what is now China. It had two long, ribbon-like tail feathers that were different from any modern bird's feathers. This little bird could fly and probably ate small animals like insects.13

Lived
133 to 121 million years ago3
Early Cretaceous
Fossils found in
Sichakou Member of the Yixian Formation and Huajiying Formation, Hebei Province, northern China1
Food
Meat13
Length
0.1 m1
excluding tail feathers

When did it live?

Triassic
Jurassic
Cretaceous
252 million years ago20114566, the asteroid

How big was it?

Protopteryx about 0.2 m longA house cat about 0.5 mA dog about 1 mA bicycle about 1.8 m

How big was Protopteryx compared to YOU?

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cool stuff

Fun facts

1

Protopteryx is one of the oldest and most primitive members of the group Enantiornithes, which were early birds that lived alongside dinosaurs.1

2

Its two central tail feathers were scalelike without barbs near the body, only having barbs at the tips. This is similar to the tail feathers of the modern red bird-of-paradise.12

3

Protopteryx was about the size of a modern starling, with a body length of only 10 centimetres (3.9 inches) not counting its long tail feathers.1

4

Its body was covered in three types of feathers: down feathers, flight feathers, and the long ribbon-like tail feathers.1

5

The down feathers of Protopteryx had flat, frayed tips instead of the hairlike barbs seen in modern birds.1

6

Protopteryx had a triosseal canal, a feature in the shoulder that helped with flight, and this is one of the earliest examples in birds.2

AI-madeAI-made picture of Protopteryx
An AI-made picture of how Protopteryx might have looked, made by a computer from what scientists know. It is a guess: the real animal may have looked different, and nobody knows its true colours.
you asked

Most asked questions about Protopteryx

?How big was Protopteryx?

About 10 centimetres long, not counting its long tail feathers. It was roughly the size of a modern starling.1

?What did Protopteryx eat?

It probably ate small animals like insects. Its teeth are similar to those of Archaeopteryx, which suggests a similar diet.1

?Could Protopteryx fly?

Yes, it was adapted for flying. It had a triosseal canal in its shoulder and asymmetric wing feathers, just like modern flying birds.1

?Why did Protopteryx have long tail feathers?

The long, ribbon-like tail feathers were probably used for display, not for flying. They only had barbs at the tips, similar to the red bird-of-paradise today.1

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For dino experts

Scientific name
Protopteryx
Named by
Zhang and Zhou 20003
Group
Early birds
Family / clade
Enantiornithes3
Classification
Theropoda > Avialae3
Age of the rocks
133 to 121 million years (Hauterivian / Barremian)3
Rock formations
Huajiying3
Countries
China3
Fossil records
2 in the Paleobiology Database3
Discovery
Protopteryx was named by Chinese paleontologists Fucheng Zhang and Zhonghe Zhou in 2000 based on a fossil found in the Yixian Formation of Hebei Province, China.13
Still debated
Scientists are still debating whether the long, ribbon-like tail feathers of Protopteryx were used for display, thermoregulation, or sensing the environment.1

Where the facts come from

  1. Protopteryx (en.wikipedia.org)
  2. A Primitive Enantiornithine Bird and the Origin of Feathers (science.org)
  3. Protopteryx in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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More from the same group: Early birds

Also from the same time: Early Cretaceous

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