恐龍卡第 0188 張，共 2 027 張

Athenar

名字的意思： “named after the musician Athenar, plus bermani honors paleontologist David S. Berman”1

吃：植物長脖子恐龍侏羅紀晚期

Athenar was a long-necked plant-eater that lived about 150 million years ago. It is known only from a skull and braincase that sat in a museum drawer for decades before scientists realized it was a new dinosaur.1 2

生存年代

149 到 145 百萬年前4

侏羅紀晚期

化石發現地

Carnegie Quarry, Dinosaur National Monument, Utah, USA4 1

長度

12 到 15 m (39 到 49 ft)3

體重

5 公噸到 10 公噸 (11,000 到 22,000 lb)3

高度

3.5 m (11 ft)

估計值

最高速度

時速約 17 公里（11 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 7 台汽車一樣重

跟 3 台汽車排成一排一樣長跟 83 根香蕉頭尾相接一樣長跟 1.5 頭大象一樣重跟 2000 顆西瓜一樣重跟 12 整班小學生一樣重跟 22 隻北極熊一樣重能在 21 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Athenar 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)

Athenar 時速約 17 公里 (11 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

Athenar was a dicraeosaurid, a group of sauropods with shorter necks and smaller bodies than giants like Diplodocus.2

The only known fossil of Athenar is a braincase and partial skull roof, collected in 1913 by Earl Douglass.1

For 65 years the skull was thought to belong to Diplodocus, but in 2025 scientists re-examined it and gave it its own name.1

Athenar lived alongside famous dinosaurs like Allosaurus, Stegosaurus, and Diplodocus in the Morrison Formation.2

The skull of Athenar has a unique 'tooth' in the suture between two bones of the braincase, a feature not seen in any other dicraeosaurid.1

Even though the skull is quite large, the bones were not fully fused, suggesting this animal was still a subadult when it died.1

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

?What did Athenar eat?

Athenar was a plant-eater, like other sauropods. It ate plants that grew in its Late Jurassic environment.2

?How big was Athenar?

Nobody knows for sure, because only its skull has been found. The skull is quite large, but the bones were not fully fused, so it was still a subadult when it died.1 2

?When did Athenar live?

Athenar lived about 150 million years ago, during the Tithonian age of the Late Jurassic period.2

?Is Athenar a dinosaur?

Yes, Athenar is a dinosaur. It is a dicraeosaurid sauropod, a type of long-necked, plant-eating dinosaur.2

給恐龍專家

學名: Athenar
命名者: Whitlock et al. 20254
類群: 長脖子恐龍
科 / 演化支: Dicraeosauridae4
分類: Sauropodomorpha > Sauropoda > Diplodocoidea4
岩石的年代: 149 到 145 百萬年 (Tithonian)4
岩層: Morrison4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The fossil was dug up in 1913 by Earl Douglass at Dinosaur National Monument, Utah. It was first described in 1978 as a Diplodocus skull, but in 2025 John Whitlock and colleagues named it a new genus, Athenar bermani.1 2
仍有爭議: Scientists are not sure exactly how big Athenar was, because only its skull has been found. They also debate whether some other skulls from the Morrison Formation belong to dicraeosaurids like Athenar.1