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Kaadi ya dayinoso No. 0891 ku 2 027

Istiorachis

Erinnya litegeeza: “sail spine”1

Yalyanga: EbimeraEzirya ebimera ez'omumwa ng'ogw'ekinyonyiEntandikwa ya Kuretasi

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

Yabeerawo

emyaka obukadde 133 okutuuka ku 121 emabega4

Entandikwa ya Kuretasi

Ebisigalira byazuulibwa mu

Isle of Wight, England, UK1 2

Obuzito

ttani 1 (2,200 lb)2

Obugulumivu

2 m (6.6 ft)2

Sipiidi esinga

nga 33 km/h (21 mph)

Okudduka, kuteebereza

Yabeerawo ddi?

Tiriyasi

Jurasiki

Kuretasi

Emyaka obukadde 252 emabega20114566, asteroyidi

Yali munene atya?

Yali mugulumivu kwenkana wa?

Yali muzito kwenkana wa?

obuzito ng'obw'embwa 50

obuzito ng'obwa wotamerooni 200obuzito ng'obw'abaana 53 ab'omu nnasaleobuzito ng'obw'abaana b'essomero 31obuzito ng'obwa ddubu enjeru 2yandidduse mita 100 mu sikonda 11 (omuntu asinga embiro yeetaaga 9.6)

Istiorachis yali munene atya bw'ogeraageranya ku GGWE?

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Yali wa mbiro kwenkana wa?

Omuntu atambula nga 5 km/h (3 mph)

Omwana ku kagaali nga 12 km/h (7 mph)

Istiorachis nga 33 km/h (21 mph)

Embalaasi edduka ennyo nga 65 km/h (40 mph)

Cheetah nga 100 km/h (62 mph)

ebintu ebinyuvu

Ebyewuunyisa

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

Ekifaananyi kya Istiorachis ekyakolebwa AI, nga kiraga engeri gye yayinza okuba ng'afaanana, ekyakolebwa kompyuta okusinziira ku ebyo bannassaayansi bye bamanyi. Kuteebereza: ekisolo ekyennyini kiyinza okuba nga kyali kifaanana bulala, era tewali amanyi langi zaakyo ez'amazima.

wabuuza

Ebibuuzo ebisinga okubuuzibwa ku 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.2 1

?When did Istiorachis live?

It lived more than 120 million years ago, during the Early Cretaceous Period (specifically the Barremian age).2 3

Eri abakugu mu dayinoso

Erinnya lya ssaayansi: Istiorachis
Yatuumibwa: Lockwood et al. 20254
Ekibinja: Ezirya ebimera ez'omumwa ng'ogw'ekinyonyi
Ekika / ekibinja: Styracosterna4
Engabanya: Ornithischia > Ornithopoda > Iguanodontia4
Emyaka gy'enjazi: emyaka obukadde 133 okutuuka ku 121 (Hauterivian / Barremian)4
Ensengeka z'enjazi: Wessex4
Ensi: Bungereza4
Ebisigalira ebyazuulibwa: 1 mu The Paleobiology Database4
Okuzuulibwa: 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
Kikyakubaganyizibwako ebirowoozo: 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

Ebituufu gye biva

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): emyaka, ebifo, ensengeka z'enjazi, engabanya.

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