Venenosaurus
Venenosaurus was a long-necked plant eater that stomped around Utah about 112 million years ago. It was a small sauropod, but still as long as a school bus and as heavy as a big elephant.1
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Fun facts
Venenosaurus had very slender arm bones, even more slender than those of many other sauropods like Alamosaurus and Saltasaurus.1
Its name comes from the Poison Strip Member, the rock layer where it was found, and 'veneno' means poison in Latin.1
Scientists found bones of both an adult and a baby Venenosaurus at the same site, which helps them learn how these giants grew.1
Venenosaurus was closely related to Cedarosaurus, another sauropod from Utah, but its bones were a bit different.1
The first fossils were found in 1998 by a volunteer named Tony DiCroce, and the species name dicrocei honors him.1
Its tail vertebrae look like those of Aeolosaurus and Gondwanatitan, sauropods from South America, showing how widespread these dinosaurs were.1

Most asked questions about Venenosaurus
?How big was Venenosaurus?
About 12 metres (39 feet) long. It weighed around 6 metric tons (6.6 short tons), about as heavy as a large elephant.12
?What did Venenosaurus eat?
It was a plant eater. Its long neck helped it reach high leaves and branches that other plant-eaters could not get to.2

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Myth buster
Myth: Some people think all sauropods were gigantic, but Venenosaurus was relatively small.
Truth: Venenosaurus was about 12 metres long and weighed about 6 metric tons, which is small for a sauropod.1
For dino experts
- Scientific name
- Venenosaurus
- Named by
- Tidwell et al. 20013
- Group
- Long-necks
- Family / clade
- Brachiosauridae3
- Classification
- Sauropodomorpha > Sauropoda > Macronaria3
- Age of the rocks
- 121 to 113 million years (Aptian)3
- Rock formations
- Cedar Mountain3
- Countries
- USA3
- Fossil records
- 1 in the Paleobiology Database3
- Discovery
- In 1998, volunteers from the Denver Museum of Natural History, including Tony DiCroce, found fossils at a site in Utah called Tony's Bone Bed. In 2001, Virginia Tidwell and colleagues named the new dinosaur Venenosaurus dicrocei.1
- Still debated
- Scientists are not sure if some fossils from Dalton Wells Quarry belong to Venenosaurus or to its close relative Cedarosaurus.1
Where the facts come from
- Venenosaurus (en.m.wikipedia.org)
- Venenosaurus Utahβs βPoison Lizardβ from Early Cretaceous (thedinosaurs.org)
- Venenosaurus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.
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