Dino card No. 0237 of 2,027

Baotianmansaurus

Say it: BOW-tee-en-man-SORE-us

Name means: “Baotianman lizard”1

Ate: PlantsLong-necksLate Cretaceous

Baotianmansaurus was a huge, long-necked plant-eater that lived in what is now China. It was big, but not as big as some of its giant cousins. Its bones were found in a nature reserve full of dinosaur eggs!1

Lived

94 to 72 million years ago3

Late Cretaceous

Fossils found in

Neixiang, near Nanyang City, Henan Province, China1

Food

Plants2

Length

20 to 22.5 m1

estimates vary

Weight

15 tonnes to 21 tonnes1

Height

5.3 m1

at the shoulder

When did it live?

Triassic

Jurassic

Cretaceous

252 million years ago20114566, the asteroid

How big was it?

How long was it?

How tall was it?

at the shoulder

How heavy was it?

as heavy as 4 elephants

as long as 5 cars parked in a rowas long as 120 bananas end to endas heavy as 14 carsas heavy as 4200 watermelonsas tall as 2.5 doors stacked up

How big was Baotianmansaurus compared to YOU?

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cool stuff

Fun facts

Baotianmansaurus is known from only one partial skeleton, including back bones, ribs, and part of a shoulder blade.1

Its back bones had a spongy texture, which is a special feature that helps scientists tell it apart from other sauropods.1

The fossils were found in the Gaogou Formation, a place where dinosaur eggs are common but body fossils are rare.1

Scientists disagree about exactly where Baotianmansaurus belongs on the sauropod family tree. Some think it is a titanosaur, others think it is a close relative of Euhelopus.1

The name Baotianmansaurus comes from the Baotianman National Nature Reserve in China, where the fossils were discovered.1

One estimate says Baotianmansaurus was about 22.5 meters (74 feet) long and weighed as much as 21 tonnes (46,000 pounds).1

AI-made picture of Baotianmansaurus — An AI-made picture of how Baotianmansaurus might have looked, made by a computer from what scientists know. It is a guess: the real animal may have looked different, and nobody knows its true colours.

you asked

Most asked questions about Baotianmansaurus

?How big was Baotianmansaurus?

Estimates vary. One estimate says about 22.5 metres (74 feet) long and 21 tonnes (46,000 pounds), another says 20 metres (66 feet) and 15 tonnes (33,000 pounds).1

?What did Baotianmansaurus eat?

It was a plant-eater, like all sauropods. It used its long neck to reach leaves and other plants.1

?When did Baotianmansaurus live?

It lived during the Late Cretaceous period, about 99 to 90 million years ago.1

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For dino experts

Scientific name: Baotianmansaurus
Named by: Zhang et al. 20093
Group: Long-necks
Family / clade: Titanosauria3
Classification: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria3
Age of the rocks: 94 to 72 million years (Turonian / Campanian)3
Rock formations: Xiaguan3
Countries: China3
Fossil records: 1 in the Paleobiology Database3
Discovery: Baotianmansaurus was named in 2009 by a team of Chinese scientists including Zhang Xingliao and Lü Junchang. The fossils were found in the Baotianman Nature Reserve in Henan Province, China.1
Still debated: Scientists are still debating whether Baotianmansaurus was a titanosaur or a more primitive somphospondylian sauropod.1

Where the facts come from

Baotianmansaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Baotianmansaurus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

Every fact on this page has a number that points to its source. If we got something wrong, sorry, we are dino fans, not a science journal. Tell us at [email protected] and we will fix it.

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