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Abrictosaurus

Izenaren esanahia: “wakeful lizard”1 2

Jaten zuen: Denetarik pixka batLandarejale mokodunakBehe Jurasikoa

Abrictosaurus was a tiny, speedy dinosaur that munched on plants in the Early Jurassic. It had a beak at the front of its mouth and different kinds of teeth, kind of like we do. Scientists named it 'wakeful lizard' because they disagreed about whether it slept through dry seasons.1 2

Bizi izan zen

Duela 201 eta 193 milioi urte artean4

Behe Jurasikoa

Fosilak hemen aurkitu dira:

Lesotho and South Africa1 4

Luzera

1,2 m (3,9 ft)1 2

Pisua

12 kg eta 45 kg artean (26 eta 99 lb artean)1 2

Altuera

0,4 m (1,3 ft)2

Abiadura maximoa

40 km/h inguru (25 mph)

Korrika egitea, kalkulua

Noiz bizi izan zen?

Triasikoa

Jurasikoa

Kretazeoa

Duela 252 milioi urte20114566, asteroidea

Zein handia zen?

Zein luzea zen?

Zein altua zen?

Zein astuna zen?

2 txakur bezain astun

2,5 etxeko katu bezain luze, sudurretik buztanerabata bestearen atzean jarritako 7 banana bezain luze11 etxeko katu bezain astun9 angurria bezain astunhaur-eskolako 2,5 haur bezain astun1,5 eskolaume bezain astunaulki baten azpitik ibiltzeko bezain txikia100 metro 9 segundotan egin zitzakeen korrika (gizakirik azkarrenak 9,6 behar ditu)

Zein handia zen Abrictosaurus ZUREKIN alderatuta?

Zure nabigatzaileko kalkulu hutsak. Ez da ezer gordetzen ez inora bidaltzen.

Zein azkarra zen?

Pertsona bat oinez 5 km/h inguru (3 mph)

Haur bat bizikletan 12 km/h inguru (7 mph)

Abrictosaurus 40 km/h inguru (25 mph)

Zaldi bat lauhazka 65 km/h inguru (40 mph)

Gepardo bat 100 km/h inguru (62 mph)

gauza bikainak

Datu dibertigarriak

Abrictosaurus is known from only two fossils: a partial skull and skeleton, plus a fragmentary skull.1

Unlike some relatives, its cheek teeth were widely spaced with low crowns, more like early ornithischians.1

One fossil had impressive tusks: an upper one 10.5 mm tall and a lower one 17 mm tall, serrated only on the front edge.1

It lived in a hot, half-dry environment with sand dunes and seasonal floods, alongside dinosaurs like Massospondylus and Heterodontosaurus.1

The first scientist who described it thought the tusks were just in males, so he called the female fossil 'consors', meaning partner or spouse.1 2

Abrictosaurus had small, weak forelimbs with only four finger bones in the fourth and fifth fingers, fewer than its relative Heterodontosaurus.1

Abrictosaurus: AAk egindako irudia — Abrictosaurus nolakoa izan zitekeen erakusten duen AAk egindako irudia, ordenagailu batek zientzialariek dakitenetik sortua. Asmakizun bat da: benetako animalia desberdina izan zitekeen, eta inork ez daki zein ziren bere benetako koloreak.

zure galderak

Abrictosaurus: gehien egindako galderak

?How big was Abrictosaurus?

About 1.2 metres (3.9 feet) long and weighed less than 45 kilograms (99 pounds). That is about as long as a small bicycle.1 2

?What did Abrictosaurus eat?

It was a herbivore or omnivore, meaning it mostly ate plants but may have eaten small animals too. It had a beak for cropping plants and different kinds of teeth for chewing.1 3

?Did Abrictosaurus have tusks?

Yes, one of the two known fossils had impressive tusks: an upper one 10.5 mm tall and a lower one 17 mm tall, serrated only on the front edge. The other fossil lacked tusks, which may mean it was a female or a juvenile.1 2

?When did Abrictosaurus live?

It lived during the Early Jurassic Period, about 200 to 190 million years ago. That is long before the famous T. rex.1

Mito-hauslea

Mitoa: Some people think Abrictosaurus had no tusks because it was female.

Egia: Abrictosaurus did have tusks. One fossil shows clear upper and lower tusks, but they are serrated only on the front, unlike relatives that have serrations on both sides.1

Dino adituentzat

Izen zientifikoa: Abrictosaurus
Izendatzailea:: Hopson 19754
Taldea: Landarejale mokodunak
Familia / klada: Heterodontosauridae4
Sailkapena: Ornithischia > Heterodontosauridae4
Arroken adina: 201 eta 193 milioi urte artean (Hettangian / Sinemurian)4
Arroka-formazioak: Elliot4
Herrialdeak: Lesotho4
Fosil-erregistroak: 1 The Paleobiology Database datu-basean4
Aurkikuntza: The first fossil was found in Lesotho and named Lycorhinus consors by Richard Thulborn in 1974. In 1975, James Hopson gave it the new genus name Abrictosaurus after studying another skull from South Africa.1 2
Oraindik eztabaidagai: Scientists are still debating whether Abrictosaurus is really a different genus from Lycorhinus and Heterodontosaurus. Some think all three might just be species of Lycorhinus.1

Datuak nondik datozen

Abrictosaurus (en.wikipedia.org)
ABRICTOSAURUS : DinoChecker dinosaur archive (dinochecker.com)
Abrictosaurus — Early Jurassic heterodontosaurid from southern Africa (en.alegsaonline.com)
Abrictosaurus in The Paleobiology Database (CC BY 4.0): adina, tokiak, arroka-formazioak, sailkapena.

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