恐龍卡第 1831 張，共 2 027 張

Trinisaura

名字的意思： “Trini's lizard, named to honor Argentine geologist Trinidad 'Trini' Diaz”1

吃：植物有喙的草食恐龍白堊紀晚期

Trinisaura was a small, speedy plant-eater that lived in Antarctica about 73 million years ago. It had a long tail for balance and a little beak for nibbling plants. It was one of the few dinosaurs that lived on the frozen continent!1

生存年代

84 到 72 百萬年前4

白堊紀晚期

化石發現地

Santa Marta Cove, James Ross Island, Antarctica1 4

長度

1.5 m (4.9 ft)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

牠有多大？

牠有多長？

跟 3 隻家貓從鼻子接到尾巴一樣長跟 8 根香蕉頭尾相接一樣長能在 8.8 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Trinisaura 跟「你」比起來有多大？

只是在你的瀏覽器裡算算數學。什麼都不會被儲存或傳送出去。

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)

Trinisaura 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

Trinisaura is one of the few dinosaurs known from Antarctica, and it was much smaller than its relative Morrosaurus, which was about 4 metres (13 feet) long.1

The only known skeleton is from a young, not fully grown individual, so scientists think adults might have been a bit bigger.1

Its fossils were found in rocks from the Snow Hill Island Formation, which were laid down in a shallow sea environment.1 2

Trinisaura had a spike-like process on its shoulder blade and a strongly bowed upper arm bone, which are unique features among ornithopods.2

It was lightly built with long hindlimbs and short forelimbs, so it probably ran on two legs.1

Trinisaura belongs to a group called Elasmaria, which includes other small, agile herbivores from South America and Antarctica.1

Trinisaura 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Trinisaura 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 Trinisaura 最常被問的問題

?How big was Trinisaura?

About 1.5 metres (4.9 feet) long, which is similar in size to a small pony. That's much smaller than its relative Morrosaurus, which was around 4 metres (13 feet) long.1 3

?What did Trinisaura eat?

It was a herbivore, meaning it ate plants. It had a small beak for nibbling vegetation and teeth to help chew.1

?Could Trinisaura run fast?

Yes, it was very lightly built with long legs and a long tail for balance, so it was a capable runner. Scientists think it could run faster than many other plant-eating dinosaurs.1

?Where did Trinisaura live?

It lived in Antarctica, on what is now James Ross Island, about 73 million years ago. Back then Antarctica was warmer and covered in forests.1

迷思破解王

迷思： Some people think dinosaurs never lived in Antarctica.

真相： Trinisaura and other dinosaurs like Antarctopelta show that dinosaurs did live in Antarctica during the Cretaceous, when the climate was warmer.1

給恐龍專家

學名: Trinisaura
命名者: Coria et al. 20134
類群: 有喙的草食恐龍
科 / 演化支: Elasmaria4
分類: Ornithischia > Ornithopoda > Iguanodontia4
岩石的年代: 84 到 72 百萬年 (Campanian)4
岩層: Snow Hill Island4
國家: 南極洲4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The fossils were collected in 2008 by paleontologists Juan Moly and Rodolfo Coria during an Antarctic expedition. They were described and named in 2013 by Coria and colleagues.1
仍有爭議: Scientists are not sure exactly how Trinisaura is related to other ornithopods. Some studies place it in Elasmaria, while others suggest it belongs to a different group called Rhabdodontoidea.1