恐龍卡第 0467 張，共 2 027 張

Cyamodus

名字的意思： “bean-shaped tooth”1

吃：肉海生爬蟲類三疊紀中期到三疊紀晚期嚴格來說不是恐龍

Cyamodus was a turtle-like marine reptile that lived in the Triassic seas. It had a hard shell made of bony plates and used its blunt teeth to crush shellfish. It was not a dinosaur, but a type of placodont.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

247 到 227 百萬年前3

三疊紀中期到三疊紀晚期

化石發現地

Germany, Switzerland, Italy, France, Poland, Hungary, and China2 1

長度

0.9 到 1.5 m (3 到 4.9 ft)1

體重

5 kg 到 25 kg (11 到 55 lb)1

最高速度

時速約 9 公里（6 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？

牠有多重？

跟 6 隻家貓一樣重

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跟 5 顆西瓜一樣重能在 20 秒內游完一座大泳池（50 公尺）

Cyamodus 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)

Cyamodus 時速約 9 公里 (6 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

Cyamodus had a two-part shell: a big plate covered its body from neck to hips, and a smaller plate covered its hips and tail base.1

Its shell was made of many hexagonal or circular bony plates that made it heavy, helping it sink and stay underwater to find food.1

Fossils of two baby Cyamodus were found inside the stomach of a Lariosaurus, a large marine reptile that ate them.1

Cyamodus lived about 245 to 235 million years ago, during the Middle and Late Triassic.1

Its skull was heart-shaped and broad, and its limbs were short so it probably only came on land to rest.1

The first Cyamodus fossils were found in Germany and were originally thought to be from fish.1

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

?How big was Cyamodus?

Most Cyamodus species were about 1.3 to 1.5 metres (4.3 to 4.9 feet) long and weighed 20 to 25 kilograms (44 to 55 pounds). The smallest species, C. rostratus, was about 0.9 metres (3.0 feet) long and weighed 5 kilograms (11 pounds).1

?What did Cyamodus eat?

Cyamodus ate shellfish, which it crushed with its blunt teeth. It lived near the sea floor, vacuuming up various shellfish and crushing them between its teeth.1

?Was Cyamodus a dinosaur?

No, Cyamodus was not a dinosaur. It was a type of placodont, a marine reptile related to turtles, and it lived during the Triassic period.1

迷思破解王

迷思： Cyamodus was an ancient turtle.

真相： It was not a turtle, but a placodont, a different group of marine reptiles that lived at the same time.1

給恐龍專家

學名: Cyamodus
命名者: von Meyer 18633
類群: 海生爬蟲類
科 / 演化支: Cyamodontidae3
分類: Placodontia > Sauropterygia3
岩石的年代: 247 到 227 百萬年 ()3
岩層: Besano, Meissner, Templomhegy Dolomite3
國家: 德國, 法國, 斯洛維尼亞, 瑞士, 波蘭, 匈牙利3
化石紀錄: The Paleobiology Database 收錄 18 筆3
發現: The genus Cyamodus was named by German scientist Christian Erich Hermann von Meyer in 1863, based on fossils from Germany.1 2
仍有爭議: Scientists debate whether Cyamodus ate only shellfish or also grazed on algae.1