恐龍卡第 0854 張，共 2 027 張

Ibirania

名字的意思： “little tree wanderer”1

吃：植物長脖子恐龍白堊紀晚期

Ibirania was a tiny sauropod, one of the smallest long-necked dinosaurs ever found. It lived in a dry, inland part of Brazil about 80 million years ago. Despite its small size, it had air-filled bones just like its giant relatives.1 2

生存年代

86 到 72 百萬年前4

白堊紀晚期

化石發現地

São Paulo State, Brazil1 3

長度

5.7 m (19 ft)1 2

高度

1.6 m (5.2 ft)

估計值

最高速度

時速約 34 公里（21 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 32 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）

Ibirania 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)

Ibirania 時速約 34 公里 (21 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

Ibirania is one of the smallest sauropods known, only about 5.7 metres (19 feet) long.1 2

Its bones were extremely hollow and filled with air sacs, like a bird's, which helped make it lighter.1

Scientists found fossilised parasites inside the bone canals of one Ibirania leg bone, the first time such parasites have been seen in a dinosaur.1

One Ibirania specimen had a bone infection called acute osteomyelitis, which scientists studied using CT scans and thin slices of the bone.1

Ibirania lived in a dry, inland environment, and its small size may have been an adaptation to scarce resources, not island life like other dwarf sauropods.1

It belonged to a group called Saltasaurinae, which includes some of the smallest titanosaurs.1 2

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

?How big was Ibirania?

About 5.7 metres (18.7 feet) long, making it one of the smallest sauropods ever found.1 2

?What did Ibirania eat?

It was a plant-eater. Its name means 'tree wanderer,' which hints that it browsed on trees and shrubs.1

?Did Ibirania have feathers?

No, it did not. Ibirania was a sauropod, and sauropods had scaly skin, not feathers.1

?Why was Ibirania so small?

Scientists think its small size was an adaptation to living in a dry, inland environment with scarce resources, not because it lived on an island.1

給恐龍專家

學名: Ibirania
命名者: Navarro et al. 20224
類群: 長脖子恐龍
科 / 演化支: Saltasauridae4
分類: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria4
岩石的年代: 86 到 72 百萬年 (Santonian / Campanian)4
岩層: São José do Rio Preto4
國家: 巴西4
化石紀錄: The Paleobiology Database 收錄 3 筆4
發現: Ibirania was named in 2022 by Navarro and colleagues based on fossils found on a farm in Ibirá, São Paulo, Brazil. The name means 'little tree wanderer' after the town and its small size.1 2
仍有爭議: Scientists are still studying the tiny parasites found in Ibirania's bones to figure out exactly what they were.1