恐龍卡第 1116 張，共 2 027 張

Magyarosaurus

名字的意思： “Hungarian lizard”1

吃：植物長脖子恐龍白堊紀晚期

Magyarosaurus was a small sauropod that lived on an island in what is now Romania. It was a dwarf dinosaur, much smaller than its giant relatives, because food was scarce on its island home.2

生存年代

72 到 66 百萬年前5

白堊紀晚期

化石發現地

Hațeg Basin, Transylvania, Romania2

長度

5 m (16 ft)1

體重

660 kg 到 972 kg (1,500 到 2,100 lb)3

高度

1.4 m (4.6 ft)

估計值

最高速度

時速約 30 公里（19 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？

牠有多高？

估計值

牠有多重？

跟 49 隻狗一樣重

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跟 190 顆西瓜一樣重跟 51 個幼兒園小朋友一樣重跟 30 個小學生一樣重跟 2 隻北極熊一樣重能在 12 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Magyarosaurus 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)

Magyarosaurus 時速約 30 公里 (19 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

Magyarosaurus is a famous example of island dwarfism, where animals become smaller when living on islands with limited resources.2

It lived during the Late Cretaceous period, about 71 to 66 million years ago.1

The first fossils were described by Baron Franz Nopcsa in 1915, who named it Titanosaurus dacus.2

Magyarosaurus was a titanosaur, a group of sauropods that includes some of the largest dinosaurs ever.1

Scientists have found bones from many individuals, including skull pieces, which is rare for sauropods.2

In 2024, a study suggested that there were actually four different titanosaur species living in the same area, including the giant Uriash kadici.2

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

?How big was Magyarosaurus?

Magyarosaurus was one of the smallest adult sauropods, measuring about 6 metres (20 feet) long and weighing up to 972 kilograms (2,143 pounds).3

?Why was Magyarosaurus so small?

It was a dwarf dinosaur because it lived on an island with limited food, a process called island dwarfism. Scientists confirmed this by studying its bone growth.3 4

?Did Magyarosaurus have feathers?

No, Magyarosaurus was a sauropod and did not have feathers. It had scaly skin and some bony armour plates called osteoderms.3

?What did Magyarosaurus eat?

Magyarosaurus was a plant-eater, like all sauropods. It ate ferns, cycads and other vegetation that grew on its island home.3

?When did Magyarosaurus live?

Magyarosaurus lived during the Late Cretaceous Period, about 71 to 66 million years ago.3

?Was Magyarosaurus a dinosaur?

Yes, Magyarosaurus was a dinosaur. It was a sauropod, a long-necked plant-eating dinosaur.3

?Could Magyarosaurus swim?

Nobody knows for sure, but like most sauropods it probably lived on land and was not a strong swimmer. It lived on an island, so it may have waded in shallow water.3

?How fast could Magyarosaurus run?

Scientists do not know its exact speed, but as a small sauropod it was likely slower than a modern horse. Its leg bones suggest it was not built for fast running.3

迷思破解王

迷思： Magyarosaurus was a baby or juvenile of a larger sauropod.

真相： Studies of its bones show that Magyarosaurus was a fully grown adult, not a baby. It was a true dwarf species.2

給恐龍專家

學名: Magyarosaurus
命名者: Huene 19325
類群: 長脖子恐龍
科 / 演化支: Eutitanosauria5
分類: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria5
岩石的年代: 72 到 66 百萬年 (Maastrichtian)5
岩層: Sebeş, Densuș-Ciula, Pui Beds5
國家: 羅馬尼亞5
化石紀錄: The Paleobiology Database 收錄 11 筆5
發現: Baron Franz Nopcsa first described the fossils in 1915, calling it Titanosaurus dacus. In 1932, Friedrich von Huene gave it its own genus, Magyarosaurus.2
仍有爭議: Scientists still debate whether all the small titanosaur fossils from Romania belong to Magyarosaurus or to several different species.2