恐龍卡第 0410 張，共 2 027 張

Chonespondylus

名字的意思： “cupped vertebrae”1

吃：肉魚龍類三疊紀早期到三疊紀中期嚴格來說不是恐龍

Chonespondylus was a big, swimming reptile that lived in the ocean during the Triassic Period. It was not a dinosaur, but a kind of ichthyosaur, with flippers and a fish-like tail. It hunted fish and other sea creatures.4

趣味小知識：這種海生爬蟲類在海裡游泳的時候，恐龍正在陸地上走路。大家都叫牠們恐龍，但牠們其實是爬蟲類的另一個分支。

生存年代

251 到 237 百萬年前4

三疊紀早期到三疊紀中期

化石發現地

Nevada, USA2

長度

4 到 5 m (13 到 16 ft)1

最高速度

時速約 46 公里（29 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

牠有多大？

牠有多長？

跟 5 隻狗從鼻子接到尾巴一樣長跟 28 根香蕉頭尾相接一樣長能在 3.9 秒內游完一座大泳池（50 公尺）

Chonespondylus 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)

Chonespondylus 時速約 46 公里 (29 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

Chonespondylus is now considered the same as Cymbospondylus, so the name is not used anymore.1

It lived about 250 to 237 million years ago, during the Triassic Period.4

Its fossils were found in rocks that were once the bottom of a warm, shallow sea.2

Chonespondylus had a long, slender body and a tail fin, like a fish, but it was a reptile that breathed air.1

It was a fast swimmer and probably chased after schools of fish.4

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

?How big was Chonespondylus?

It varied by species. The smallest was about 4 to 5 metres (13 to 16 ft) long, and the largest known species, C. youngorum, was over 17 metres (56 ft) long.3

?What did Chonespondylus eat?

It ate fish and cephalopods like squid. Larger species may have also eaten other marine reptiles.3

?When did Chonespondylus live?

It lived during the Lower to Middle Triassic Period, about 250 to 237 million years ago.3

?Where were Chonespondylus fossils found?

Fossils have been found in Nevada and Switzerland, with some specimens also from Idaho, the Alps, and Spitsbergen in Norway.3

?Could Chonespondylus swim fast?

It was likely a fast swimmer. Its long, flexible body and powerful tail helped it burst forward to ambush prey.3

迷思破解王

迷思： Some people think Chonespondylus was a dinosaur.

真相： It was actually an ichthyosaur, a marine reptile that lived in the ocean, not a dinosaur.1

給恐龍專家

學名: Chonespondylus
命名者: Leidy 18684
類群: 魚龍類
科 / 演化支: Cymbospondylidae4
分類: Ichthyosauria > Ichthyosauromorpha4
岩石的年代: 251 到 237 百萬年 ()4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 17 筆4
發現: Chonespondylus was named by Joseph Leidy in 1868 from fossils found in Nevada, USA.4
仍有爭議: Scientists are not sure if Chonespondylus is a separate genus or just a younger name for Cymbospondylus.1