恐龍卡第 0568 張，共 2 027 張

Eidolosaurus

名字的意思： “shadow lizard”1

吃：肉滄龍類白堊紀晚期嚴格來說不是恐龍

Eidolosaurus was a marine lizard that swam in the seas during the time of the dinosaurs. It had a long, oar-like tail and lived about 100 to 90 million years ago. Scientists know it from a fossil that is mostly an impression, like a shadow in the rock.2 1

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

100 到 90 百萬年前3

白堊紀晚期

化石發現地

Slovenia, at a place called Comen3

長度

0.21 m (0.7 ft)1

最高速度

時速約 3 公里（2 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 7 塊積木排成一排一樣長能在 60 秒內游完一座大泳池（50 公尺）

Eidolosaurus 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？

Eidolosaurus 時速約 3 公里 (2 mph)

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)

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

Eidolosaurus had a long, broad, oar-like tail, which helped it swim in the sea.1

The fossil is mostly an impression, not solid bones, so scientists call it a 'shadowlike imprint'.1

It had 34 vertebrae in its back, 2 in its hips, and at least 48 in its tail.1

Eidolosaurus is related to other marine lizards like mosasaurs and dolichosaurs, but it is not a dinosaur.2 1

The fossil was found during the demolition of a house, and it was given to scientists by Dr. Trauth.1

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

迷思破解王

迷思： Some people might think Eidolosaurus was a dinosaur because it lived long ago.

真相： Eidolosaurus was a marine lizard, not a dinosaur. Dinosaurs lived on land, and this animal swam in the sea.2

給恐龍專家

學名: Eidolosaurus
命名者: Nopcsa 19233
類群: 滄龍類
科 / 演化支: Aigialosauridae3
分類: Mosasauroidea3
岩石的年代: 100 到 90 百萬年 (Cenomanian / Turonian)3
國家: 斯洛維尼亞3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: The fossil was found during the demolition of a house in Slovenia, and Dr. Trauth showed it to Baron Nopcsa. Nopcsa named it Eidolosaurus trauthi in 1923.1
仍有爭議: Scientists are not sure exactly what Eidolosaurus ate or how it lived, because the fossil is only an impression and not complete bones.2