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Judinornis

Say it: joo-din-OR-nis

Name means: “Judin's bird”1

Ate: MeatEarly birdsLate Cretaceous

Judinornis was a flightless bird that lived during the time of the dinosaurs. It had teeth in its beak and swam in rivers and estuaries, hunting for fish.1

Lived

72 to 66 million years ago2

Late Cretaceous

Fossils found in

Mongolia1 2

Food

Meat2

When did it live?

Triassic

Jurassic

Cretaceous

252 million years ago20114566, the asteroid

cool stuff

Fun facts

Judinornis was a member of the Hesperornithes, a group of flightless, toothed seabirds from the Cretaceous period.1

Unlike many of its relatives that lived in the sea, Judinornis lived in rivers and estuaries in what is now Mongolia.1

Judinornis probably lived about 70 million years ago, during the early Maastrichtian stage of the Late Cretaceous.1

Its fossils were found in the Nemegt Formation, which was formed from sediments deposited by rivers in a dry landscape.1

Judinornis is known from only a single species, Judinornis nogontsavensis.1

AI-made picture of Judinornis — An AI-made picture of how Judinornis 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.

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For dino experts

Scientific name: Judinornis
Named by: Nessov and Borkin 19832
Group: Early birds
Family / clade: Baptornithidae2
Classification: Theropoda > Avialae2
Age of the rocks: 72 to 66 million years (Maastrichtian)2
Rock formations: Beds of Nogon Tsav2
Countries: Mongolia2
Fossil records: 1 in the Paleobiology Database2
Discovery: Judinornis was named by Lev Nessov and L. Y. Borkin in 1983, based on a fossil found at Nogon Tsav in Mongolia.2 1
Still debated: Scientists are not sure exactly how Judinornis is related to other hesperornithine birds, but it appears to have been one of the more basal members of the group.1

Where the facts come from

Judinornis (en.wikipedia.org)
Judinornis in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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