恐龍卡第 1588 張，共 2 027 張

Sarmientosaurus

名字的意思： “Sarmiento lizard”4

吃：植物長脖子恐龍白堊紀晚期

Sarmientosaurus was a long-necked plant-eater that lived in what is now Argentina. It had a complete skull with huge eye sockets, which might have given it excellent vision. Its skull and neck bones show it may have held its head low to eat ferns and other low-growing plants.1

生存年代

100 到 90 百萬年前4

白堊紀晚期

化石發現地

Cañadón Las Horquetas, Estancia Laguna Palacios, Chubut Province, Patagonia, Argentina4 1

最高速度

時速約 15 公里（9 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)

Sarmientosaurus 時速約 15 公里 (9 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

Sarmientosaurus is one of the few sauropods known from a complete skull, which is in fantastic condition with all its teeth still in place.1

Its eye sockets were huge, about 40 percent of the length of its skull. This may have given it better vision than many other titanosaurs.1 2

The dinosaur had a strange, long ossified tendon along its neck, which may have helped support its head or control its posture.1

Sarmientosaurus is a basal lithostrotian titanosaur, meaning it was an early relative of the huge, armored titanosaurs like Ankylosaurus.1

Based on the inner ear and neck structure, scientists think Sarmientosaurus often kept its head and neck hanging downward, much like a sad donkey.2

It lived during the Cenomanian to Turonian ages of the Late Cretaceous, about 100 to 90 million years ago.4

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

?How big was Sarmientosaurus?

Scientists do not know its exact size because only the skull and neck bones have been found. The skull is about 43 centimetres (17 inches) long.2

?What did Sarmientosaurus eat?

It was a plant-eater. It probably ate low-growing plants like ferns, because its skull and neck suggest it held its head and neck downward.2 3

?Why did Sarmientosaurus have huge eyes?

Its eye sockets were huge, about 40 percent of the skull's length. This may have given it better vision than many other titanosaurs.2 3

?When did Sarmientosaurus live?

It lived during the Late Cretaceous Period, about 95 million years ago, in what is now Argentina.2

給恐龍專家

學名: Sarmientosaurus
命名者: Martínez et al. 20164
類群: 長脖子恐龍
科 / 演化支: Diamantinasauria4
分類: Sauropodomorpha > Sauropoda > Macronaria4
岩石的年代: 100 到 90 百萬年 (Cenomanian / Turonian)4
岩層: Bajo Barreal4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The only known specimen of Sarmientosaurus was discovered in the Bajo Barreal Formation in Chubut Province, central Patagonia, Argentina. It was named in 2016 by Martínez and colleagues from a skull and part of the neck.4 1
仍有爭議: Scientists are still unsure exactly how Sarmientosaurus held its neck. Some think it kept it low for eating low plants, but others debate its precise posture.1