恐龍卡第 0930 張，共 2 027 張

Judinornis

名字的意思： “Judin's bird”1

吃：肉早期鳥類白堊紀晚期

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

生存年代

72 到 66 百萬年前2

白堊紀晚期

化石發現地

Mongolia1 2

最高速度

時速約 12 公里（7 英里）

游泳, 估計值

牠生活在什麼時候？

三疊紀

侏羅紀

白堊紀

2 億 5200 萬年前20114566，小行星撞地球

牠有多快？

走路的人 時速約 5 公里 (3 mph)

騎腳踏車的小朋友 時速約 12 公里 (7 mph)

Judinornis 時速約 12 公里 (7 mph)

一匹飛奔的馬 時速約 65 公里 (40 mph)

一隻獵豹 時速約 100 公里 (62 mph)

酷東西

趣味知識

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

Judinornis 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Judinornis 可能的樣子。這只是猜測：真正的動物可能長得不一樣，也沒有人知道牠真正的顏色。

給恐龍專家

學名: Judinornis
命名者: Nessov and Borkin 19832
類群: 早期鳥類
科 / 演化支: Baptornithidae2
分類: Theropoda > Avialae2
岩石的年代: 72 到 66 百萬年 (Maastrichtian)2
岩層: Beds of Nogon Tsav2
國家: 蒙古2
化石紀錄: The Paleobiology Database 收錄 1 筆2
發現: Judinornis was named by Lev Nessov and L. Y. Borkin in 1983, based on a fossil found at Nogon Tsav in Mongolia.2 1
仍有爭議: 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