恐龍卡第 1006 張，共 2 027 張

Lajasvenator

名字的意思： “Las Lajas hunter”1

吃：肉肉食恐龍白堊紀早期

Lajasvenator was a meat-eating dinosaur that lived about 135 million years ago in what is now Argentina. It was a medium-sized predator, not as big as its giant cousins like Giganotosaurus, but still a fierce hunter. It is special because it is the oldest carcharodontosaurid found in South America.1 2

生存年代

137 到 133 百萬年前3

白堊紀早期

化石發現地

Neuquén Province, Patagonia, Argentina1 2

長度

3.5 m (11 ft)1

高度

1.1 m (3.6 ft)

估計值

最高速度

時速約 51 公里（32 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 4 隻狗從鼻子接到尾巴一樣長跟 19 根香蕉頭尾相接一樣長能在 7.1 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Lajasvenator 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)

Lajasvenator 時速約 51 公里 (32 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

Lajasvenator is the oldest carcharodontosaurid dinosaur ever found in South America, living about 137 to 132 million years ago.1 2

It had unique features on its neck bones, like lip-like crests and bilobed (two-lobed) processes on its ribs, which are not seen in other dinosaurs.2

Lajasvenator was found with remains of the sauropod Pilmatueia, a long-necked plant-eater, and other dinosaurs like an iguanodontian-like ornithopod.2

Scientists think Lajasvenator might show that early carcharodontosaurids were medium-sized, and later they evolved into giants like Giganotosaurus and Mapusaurus.1

The name Lajasvenator comes from the city of Las Lajas in Argentina, where the fossils were found.1

It was about 3.5 meters (11 feet) long, which is about the length of a small car.1

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

?How big was Lajasvenator?

Lajasvenator was about 3.5 meters (11 feet) long, which is about the length of a small car. It was one of the smaller known carcharodontosaurids.1

?What did Lajasvenator eat?

Lajasvenator was a meat-eater, a theropod dinosaur. It likely hunted small to medium-sized plant-eating dinosaurs, as it was found with remains of the sauropod Pilmatueia and an iguanodontian-like ornithopod.1 2

?When did Lajasvenator live?

Lajasvenator lived about 135 million years ago, during the Early Cretaceous period. It is the oldest carcharodontosaurid known from South America.1

?Was Lajasvenator a dinosaur?

Yes, Lajasvenator was a dinosaur, specifically a theropod dinosaur. It belonged to the group Carcharodontosauridae, which includes other meat-eating dinosaurs.1

?Why is Lajasvenator important?

Lajasvenator is important because it is the oldest carcharodontosaurid found in South America. It helps scientists understand how these predators evolved, possibly starting medium-sized and later becoming giants like Giganotosaurus.1 2

迷思破解王

迷思： Some people think all meat-eating dinosaurs were huge like T. rex.

真相： Lajasvenator was a medium-sized predator, only about 3.5 meters long, showing that many carnivorous dinosaurs were much smaller.1

給恐龍專家

學名: Lajasvenator
命名者: Coria et al. 20203
類群: 肉食恐龍
科 / 演化支: Carcharodontosauridae3
分類: Theropoda > Allosauroidea > Carcharodontosauridae3
岩石的年代: 137 到 133 百萬年 (Valanginian)3
岩層: Mulichinco3
國家: 阿根廷3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Lajasvenator was named by Rodolfo Coria and colleagues in 2020, based on two partial skeletons found in the Mulichinco Formation in Argentina.1 2
仍有爭議: Scientists are still debating exactly how Lajasvenator is related to other carcharodontosaurids, with some studies placing it near Concavenator and others near Labocania and Shaochilong.1