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Istiorachis

Il num vul dir: “sail spine”1
Mangiava: PlantasErbivors cun pichelCretacic tempriv

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

Viveva
avant 133 fin 121 milliuns onns4
Cretacic tempriv
Fossils chattads en
Isle of Wight, England, UK12
Paisa
1 tonnas (2 200 lb)2
Autezza
2 m (6,6 ft)2
Spertadad maximala
var 33 km/h (21 mph)
Currer, stima

Cura viveva el?

Triassic
Giurassic
Cretacic
avant 252 milliuns onns20114566, l'asteroid

Quant grond era el?

Quant aut era el?

In chaunvar 0,5 m (1,6 ft)In chavalvar 1,6 m (5,2 ft)Istiorachisvar 2 m aut (6,6 ft)In elefantvar 3,2 m (10 ft)

Quant grev era el?

uschè grev sco 50 chauns
uschè grev sco 200 melunasuschè grev sco 53 uffants da scolettauschè grev sco 31 scolarsuschè grev sco 2 urs polarspudess currer 100 meters en 11 secundas (il pli spert uman dovra 9,6)

Quant grond era Istiorachis cumpareglià cun TAI?

Mo matematica en tes navigatur. Nagut na vegn arcunà u tramess.

Quant spert era el?

chaussas cool

Fatgs divertents

1

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

2

Its name honors Dame Ellen MacArthur, a famous sailor from the Isle of Wight who sailed solo around the world.1

3

The only known fossil of Istiorachis was found in a plant debris bed near Grange Chine on the Isle of Wight.1

4

Some of the skeleton was stolen by poachers before scientists could collect it.1

5

Istiorachis belonged to a group of dinosaurs called iguanodontians, which were common in the Early Cretaceous.2

6

The sail of Istiorachis was made of neural spines that were over four times taller than the main part of the backbone.1

Fatg cun IAMaletg da Istiorachis fatg cun IA
In maletg fatg cun IA che mussa co Istiorachis pudess avair guardà ora, fatg d'in computer tenor quai che la scienza sa. I sa tracta d'ina supposiziun: l'animal vair ha forsa guardà ora auter, e sias colurs vairas èn nunenconuschentas.
tias dumondas

Las dumondas las pli frequentas davart 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

?Why did Istiorachis have a sail?

Scientists think the sail was mostly used for signalling, such as attracting mates or scaring predators, rather than for controlling body temperature.21

?When did Istiorachis live?

It lived more than 120 million years ago, during the Early Cretaceous Period (specifically the Barremian age).23

Per experts da dinos

Num scientific
Istiorachis
Numnà da
Lockwood et al. 20254
Gruppa
Erbivors cun pichel
Famiglia / clada
Styracosterna4
Classificaziun
Ornithischia > Ornithopoda > Iguanodontia4
Vegliadetgna da la crappa
133 fin 121 milliuns onns (Hauterivian / Barremian)4
Formaziuns da crap
Wessex4
Pajais
Reginavel Unì4
Chats da fossils
1 en The Paleobiology Database4
Scuverta
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
Anc discutà
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

Danunder che vegnan ils fatgs

  1. 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)
  2. New sail-backed dinosaur species unearthed on the Isle of Wight | Natural History Museum (nhm.ac.uk)
  3. Istiorachis (en.wikipedia.org)
  4. Istiorachis in The Paleobiology Database (CC BY 4.0): vegliadetgna, lieus, formaziuns da crap, classificaziun.

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