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Chimaera

Say it: kye-MEER-uh
Name means: “monster or mythical beast”3
Ate: MeatMeat-eating dinosLate Triassic

Chimaera was a meat-eating dinosaur that left its footprints in the mud over 200 million years ago. It lived during the late Triassic period, when the first dinosaurs were spreading across the land. Its name comes from a scary monster in old stories.3

Lived
227 to 206 million years ago3
Late Triassic
Food
Meat3
Length
up to 1.5 m2

When did it live?

Triassic
Jurassic
Cretaceous
252 million years ago20114566, the asteroid

How big was it?

How long was it?

Chimaera about 1.5 m longA house cat about 0.5 mA dog about 1 mA bicycle about 1.8 m
as long as 3 house cats nose to tailas long as 8 bananas end to end

How big was Chimaera compared to YOU?

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cool stuff

Fun facts

1

Chimaera is known only from fossil footprints, not from bones. Scientists call these trace fossils because they show the animal's actions, not its body.33

2

The footprints were first named by Edward Hitchcock in 1858. He was a geologist who studied many dinosaur tracks in New England.3

3

Chimaera lived during the Norian stage of the Triassic, about 227 to 205 million years ago. That is before the first birds or flying reptiles evolved.3

4

The footprints of Chimaera belong to a group called Sauropodidae. That does not mean it was a sauropod (long-necked plant-eater). The name is confusing, but it is a group for certain kinds of footprints.3

5

Only a few footprints of Chimaera have been found. That makes it hard for scientists to know exactly what the dinosaur looked like.3

AI-madeAI-made picture of Chimaera
An AI-made picture of how Chimaera 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 Chimaera

?What is Chimaera?

Chimaera is a meat-eating dinosaur known only from fossil footprints, not bones. It lived during the late Triassic period, about 227 to 205 million years ago.2

?How big was Chimaera?

Nobody knows for sure because only footprints have been found. The tracks suggest a medium-sized dinosaur, but no body fossils exist to give an exact size.2

?What did Chimaera eat?

Chimaera was a meat-eater, based on its name and classification as a theropod dinosaur. It likely hunted small animals, but no direct evidence of its diet exists.2

?Could Chimaera swim?

No, Chimaera was a land dinosaur and could not swim. Its footprints show it walked on mud, not in water.2

?Was Chimaera bigger than T. rex?

No, Chimaera was much smaller than T. rex. T. rex was a huge predator, while Chimaera is known only from small footprints, so it was likely much smaller.2

?Did Chimaera have feathers?

Nobody knows for sure. No body fossils have been found, so scientists cannot tell if Chimaera had feathers or scales.2

?Is Chimaera a dinosaur?

Yes, Chimaera is a dinosaur, specifically a meat-eating theropod. It is known from its footprints, which are trace fossils.2

?When did Chimaera live?

Chimaera lived during the Norian stage of the Triassic, about 227 to 205 million years ago. That was before the first birds or flying reptiles evolved.2

?Why is it called Chimaera?

Its name comes from a scary monster in old stories, the Chimaera. This name was given because the footprints looked strange and mysterious.2

?What would happen if Chimaera was alive today?

If Chimaera were alive today, it would be a small to medium meat-eating dinosaur. It might hunt small animals, but it would likely be prey for larger predators.2

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Myth buster

Myth: Chimaera is related to the modern fish called a chimaera (ghost shark).

Truth: Chimaera the dinosaur is only known from footprints in rock. The fish named Chimaera is a completely different animal that lives in the ocean today.31

For dino experts

Scientific name
Chimaera
Named by
Hitchcock 18583
Group
Meat-eating dinos
Family / clade
Sauropodidae3
Classification
Theropoda3
Age of the rocks
227 to 206 million years (Norian)3
Fossil records
8 in the Paleobiology Database3
Discovery
Edward Hitchcock, an American geologist, named Chimaera in 1858 based on fossil footprints he studied. He was one of the first scientists to study dinosaur tracks in the United States.3
Still debated
Scientists are not sure what dinosaur made the Chimaera footprints. Since only the tracks were found, nobody knows the exact body shape or size of this animal.3

Where the facts come from

  1. ITIS - Report: Chimaera (itis.gov)
  2. Chimaera (en.wikipedia.org)
  3. Chimaera in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

Every fact on this page has a number that points to its source. If we got something wrong, sorry, we are dino fans, not a science journal. Tell us at [email protected] and we will fix it.

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