恐龍卡第 0142 張，共 2 027 張

Arackar

名字的意思： “skeleton in the Kunza language”1

吃：植物長脖子恐龍白堊紀晚期

Arackar was a long-necked plant-eater that lived in what is now Chile. It was a titanosaur, a kind of sauropod, and it walked on four sturdy legs. Even though it was a small titanosaur, it was still about as long as a big car.2 3

生存年代

84 到 66 百萬年前5

白堊紀晚期

化石發現地

Atacama Region, northern Chile3 1

長度

6.3 m (21 ft)3

高度

1.7 m (5.6 ft)

估計值

最高速度

時速約 32 公里（20 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

跟 6 隻狗從鼻子接到尾巴一樣長跟 35 根香蕉頭尾相接一樣長能在 11 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Arackar 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)

Arackar 時速約 32 公里 (20 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

Arackar is the third dinosaur ever named from Chile.3

Its fossils were discovered in 1993 by Carlos Arévalo in a dry ravine called Quebrada La Higuera.3 1

The only known skeleton is from a sub-adult, meaning it was not fully grown when it died.3

Arackar belongs to a group of titanosaurs called Lithostrotia, which includes other famous long-necked dinosaurs.2 3

Its closest relatives include Rapetosaurus from Madagascar and Isisaurus from India.3

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

?How big was Arackar?

The only known skeleton is about 6.3 metres (21 ft) long, which is about as long as a big car. It was a juvenile, so a fully grown adult would have been bigger, but scientists don't know exactly how big.1 4

?What did Arackar eat?

Arackar was a plant-eater, like all titanosaurs. It ate leaves and plants that grew in its warm, humid home in what is now Chile.4

?When did Arackar live?

Arackar lived during the Late Cretaceous period, about 80 to 66 million years ago.4

?Where was Arackar found?

Its fossils were found in the Atacama Region of northern Chile, about 75 km (47 mi) south of the city of Copiapó.1 4

給恐龍專家

學名: Arackar
命名者: Rubilar-Rogers et al. 20215
類群: 長脖子恐龍
科 / 演化支: Lithostrotia5
分類: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria5
岩石的年代: 84 到 66 百萬年 (Campanian / Maastrichtian)5
岩層: Hornitos5
國家: 智利5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Arackar was named in 2021 by David Rubilar-Rogers and his team. The fossils were found in 1993 and later dug up in 1994 from the Hornitos Formation in Chile.1 3