恐龍卡第 0850 張，共 2 027 張

Iani

名字的意思： “named after Janus, the Roman god of change”1

吃：植物有喙的草食恐龍白堊紀晚期

Iani was a plant-eating dinosaur that lived about 99 million years ago in what is now Utah. It had a powerful jaw with teeth perfect for chewing tough plants, and it might have been one of the last of its kind before duckbill dinosaurs took over.1

生存年代

100 到 94 百萬年前5

白堊紀晚期

化石發現地

Utah, USA (Cedar Mountain Formation)5 1

最高速度

時速約 41 公里（25 英里）

跑步, 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)

Iani 時速約 41 公里 (25 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

Iani is named after Janus, the Roman god of change, because it lived during a time when Earth's climate was warming and dinosaur populations were shifting.1

The only known skeleton of Iani is from a juvenile and includes a nearly complete skull, vertebrae, and parts of the arms and legs.1

Iani belongs to a group of dinosaurs called rhabdodontomorphs, which were mostly known from Europe before this discovery.1

During Iani's time, giant sauropods were disappearing from North America, and new dinosaurs like early duckbills and tyrannosaurs were arriving from Asia.1

Scientists think Iani might have been one of the last survivors of a dinosaur lineage that was eventually replaced by duckbill dinosaurs.1

The fossil of Iani was discovered in 2014 in the Cedar Mountain Formation of Utah, and it was named in 2023.2 1

Iani 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Iani 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。

你們都在問

關於 Iani 最常被問的問題

?How big was Iani?

Iani was about 3 metres (10 feet) long, about the size of a small car. It was a plant-eater that stood on two legs.3

?What did Iani eat?

Iani was a vegetarian. It had a powerful jaw and teeth with many ridges to chew through tough plant material.3 4

?When did Iani live?

Iani lived about 99 million years ago, during the Late Cretaceous period in what is now Utah, USA.2 4

?Is Iani a dinosaur?

Yes, Iani is a dinosaur. It is a type of ornithopod, which is a group of plant-eating dinosaurs that walked on two legs.2 4

給恐龍專家

學名: Iani
命名者: Zanno et al. 20235
類群: 有喙的草食恐龍
科 / 演化支: Tenontosauridae5
分類: Ornithischia > Ornithopoda > Iguanodontia5
岩石的年代: 100 到 94 百萬年 (Cenomanian)5
岩層: Cedar Mountain5
國家: 美國5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: The only known specimen of Iani was discovered in 2014 in Utah's Cedar Mountain Formation. It was named Iani smithi in 2023 by Lindsay Zanno and her team, with the species name honoring paleontologist Joshua Aaron Smith.2 1
仍有爭議: Scientists are still debating whether Iani is a rhabdodontomorph, a group of dinosaurs mostly found in Europe, which would mean this lineage survived longer in North America than previously thought.1