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Fun facts
Jaxartosaurus is known only from a skull roof and braincase, so scientists have limited information about its body.1
It had a helmet-like crest on its head, which was probably made of the premaxillae and nasals bones.2
Jaxartosaurus lived during the Late Cretaceous, about 94 to 84 million years ago.1
Its skull was wide and low, with large frontals that were isolated from the edge of the eye socket.2
The lower jaw of Jaxartosaurus had 34 to 35 rows of teeth, which helped it grind plants.2
Jaxartosaurus is one of the oldest known lambeosaurine hadrosaurs, helping scientists understand the early evolution of duck-billed dinosaurs.2
Most asked questions about Jaxartosaurus
?How big was Jaxartosaurus?
About 9 metres (30 feet) long. That is roughly the length of a school bus.1
?What did Jaxartosaurus eat?
It ate plants. It was an herbivore that used its 34 to 35 rows of teeth to grind up low-lying plants.14
?Did Jaxartosaurus have a crest?
Yes, it had a helmet-like crest on its head. It may have used the crest for visual identification or to make sounds to communicate with others of its kind.42
?When did Jaxartosaurus live?
It lived during the Late Cretaceous, about 94 to 84 million years ago.1
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For dino experts
- Scientific name
- Jaxartosaurus
- Named by
- Riabinin 19375
- Group
- Duck-bills
- Family / clade
- Hadrosauridae5
- Classification
- Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae5
- Age of the rocks
- 90 to 84 million years (Coniacian / Santonian)5
- Rock formations
- Dabrazhin, Ulungar5
- Countries
- Kazakhstan, China5
- Fossil records
- 2 in the Paleobiology Database5
- Discovery
- Jaxartosaurus was named by Russian paleontologist Anatoly Riabinin in 1937, based on a skull found in southern Kazakhstan.51
- Still debated
- Scientists are not sure exactly how the crest of Jaxartosaurus looked, because the crest was mostly destroyed in the only known skull.2
Where the facts come from
- Jaxartosaurus | Natural History Museum (nhm.ac.uk)
- HADROSAURS OF KAZAKHSTAN (naturalhistory.si.edu)
- Jaxartosaurus aralensis | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
- Jaxartosaurus (Wikipedia) (Wikipedia)
- Jaxartosaurus 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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