Acheroraptor
Acheroraptor was a feathered, meat-eating dinosaur that lived right at the end of the Age of Dinosaurs. It was a close cousin of Velociraptor and ran on two long legs, using its sharp, ridged teeth to hunt. It lived alongside Tyrannosaurus rex and Triceratops in what is now North America.1
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Fun facts
Acheroraptor is the youngest known dromaeosaurid, or 'raptor' dinosaur, living just before the mass extinction 66 million years ago.1
Its teeth have unique ridges that run from tip to base, which helped scientists identify it as a new species.1
Acheroraptor was about 3 metres (9 feet) long and weighed around 40 kilograms (90 pounds), making it a relatively large raptor.1
It was likely covered in feathers, like its close relatives Velociraptor and birds.1
Acheroraptor is more closely related to Asian raptors like Velociraptor than to older North American species, suggesting dinosaurs migrated between continents.3
Most asked questions about Acheroraptor
?How big was Acheroraptor?
Acheroraptor was about 3 metres (9.8 feet) long and weighed around 40 kilograms (88 pounds), similar in size to Deinonychus.14
?Did Acheroraptor have feathers?
Yes, it was likely covered in feathers, like its close relatives Velociraptor and birds.1
?What did Acheroraptor eat?
It was a meat-eating dinosaur, using its sharp, ridged teeth to hunt.1
?When did Acheroraptor live?
Acheroraptor lived 67 to 66 million years ago, right before the mass extinction that ended the Age of Dinosaurs.1
?Where was Acheroraptor found?
Its fossils were found in the Hell Creek Formation in Montana, USA.4
?Is Acheroraptor related to Velociraptor?
Yes, it was a close cousin of Velociraptor, and its jaw bones compare more closely to Asian species like Velociraptor than to older North American ones.1
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For dino experts
- Scientific name
- Acheroraptor
- Named by
- Evans et al. 20135
- Group
- Raptors
- Family / clade
- Dromaeosauridae5
- Classification
- Theropoda > Dromaeosauridae5
- Age of the rocks
- 72 to 66 million years (Maastrichtian)5
- Rock formations
- Hell Creek, Lance5
- Countries
- USA5
- Fossil records
- 3 in the Paleobiology Database5
- Discovery
- Acheroraptor was named in 2013 by David Evans and colleagues, based on an upper jaw and a lower jaw found in the Hell Creek Formation of Montana. The species name honors James and Louise Temerty for their support of the Royal Ontario Museum.1
Where the facts come from
- Scientists Reveal New “Raptor” Dinosaur from North America | Royal Ontario Museum (rom.on.ca)
- PBDB Taxon (paleobiodb.org)
- A new dromaeosaurid (Dinosauria: Theropoda) with Asian affinities from the latest Cretaceous of North America (pubmed.ncbi.nlm.nih.gov)
- Acheroraptor (Wikipedia) (Wikipedia)
- Acheroraptor in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.
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Velociraptor
Microraptor
Deinonychus
Asiamericana
Richardoestesia
Saurornitholestes
Tyrannosaurus
Triceratops
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Ankylosaurus
Parasaurolophus
Pteranodon