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Istiorachis
Istiorachis was a plant-eating dinosaur that lived on the Isle of Wight over 120 million years ago. It had a tall sail on its back made of long spines, which might have helped it show off to other dinosaurs. It was about the size of an American bison and weighed as much as a small car.2
Kañ la dundoon?
Naka la réyoon?
Naka la kawewoon?
Naka la diisoon?
Naka la Istiorachis réyoon, bu ñu ko méngalee ak YAW?
Ay kalkil rekk ci sa navigatëer. Dara du ñu denc, dara du ñu yónne fenn.
Naka la gaawoon?
Xibaar yu neex
Istiorachis had very long spines on its back and tail bones, making a sail-like structure that was probably used for showing off to mates or scaring predators.1
Its name honors Dame Ellen MacArthur, a famous sailor from the Isle of Wight who sailed solo around the world.1
The only known fossil of Istiorachis was found in a plant debris bed near Grange Chine on the Isle of Wight.1
Some of the skeleton was stolen by poachers before scientists could collect it.1
Istiorachis belonged to a group of dinosaurs called iguanodontians, which were common in the Early Cretaceous.2
The sail of Istiorachis was made of neural spines that were over four times taller than the main part of the backbone.1
Laaj yi ñu gën a laaj ci Istiorachis
?How big was Istiorachis?
It was about the size of an American bison, stood around two metres tall, and weighed about one tonne (1,000 kilograms).2
?What did Istiorachis eat?
It was a plant-eating dinosaur, so it ate plants like ferns, cycads and conifers that grew in its warm, forested environment.3
Ngir ñi xam dino lool
- Turu xam-xam
- Istiorachis
- Ku ko tudde
- Lockwood et al. 20254
- Kurél
- Dino yu lekk gàncax te am gémmiñu picc
- Njaboot / klad
- Styracosterna4
- Klasifikasiyoŋ
- Ornithischia > Ornithopoda > Iguanodontia4
- Màggaayu doj yi
- 133 ba 121 milyoŋ at (Hauterivian / Barremian)4
- Formasiyoŋi doj
- Wessex4
- Réew yi
- Angalteer4
- Fosil yu ñu gis
- 1 ci The Paleobiology Database4
- Gisees
- Istiorachis was named in 2025 by Jeremy Lockwood, David Martill, and Susannah Maidment. The fossil was dug up by Nicholas Chase from the Wessex Formation on the Isle of Wight.1
- Ñu ngi koy werante ba tey
- Scientists are not sure exactly what the sail was used for. It might have helped with walking on four legs, or it might have been for showing off to other dinosaurs.1
Fa xibaar yi jóge
- The origins of neural spine elongation in iguanodontian dinosaurs and the osteology of a new sail-back styracosternan (Dinosauria, Ornithischia) from the Lower Cretaceous Wealden Group of England (onlinelibrary.wiley.com)
- New sail-backed dinosaur species unearthed on the Isle of Wight | Natural History Museum (nhm.ac.uk)
- Istiorachis (en.wikipedia.org)
- Istiorachis in The Paleobiology Database (CC BY 4.0): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.
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