Mononykus

Order: Saurischia · Suborder: Theropoda · Infraorder: Tetanurae
Mononykus is known from fragmentary remains discovered in Mongolia. It had a large but short forelimbwith a single claw. While not capable of flight, Mononychus may be more closely related to modern-day birds than is Archaeopteryx.

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Reference background: Natural History Museum, London — Dinosaurs; Smithsonian National Museum of Natural History — Dinosaurs; American Museum of Natural History — Dinosaurs & Fossils. Figures are typical published ranges; taxonomy follows the source era and modern consensus is noted where it differs. See our sources & fact-check policy.
Frequently asked questions
What does Mononykus mean?
The name Mononykus means “One Claw”. It is pronounced mo-NON-ih-kus.
When did Mononykus live?
Mononykus lived during the Late Cretaceous.
Was Mononykus a carnivore or a herbivore?
Mononykus was a carnivore.
How big was Mononykus?
Mononykus was about 5 feet (1.5meters) long, around 3.5 feet (1.1meters) tall.
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