Protognathosaurus

Zita rinoreva: “early jaw lizard”1

Raidya: MiriwoMadhino emitsipa mirefuJurassic Yepakati kusvika Jurassic Yekupedzisira

Protognathosaurus was a long-necked, plant-eating dinosaur that lived in what is now China during the Middle Jurassic. It is known only from a piece of its lower jaw, so scientists are still learning about it. Most researchers think it was a medium-sized sauropod.1 3

Raivapo

makore mamiriyoni 171 kusvika 155 apfuura3

Jurassic Yepakati kusvika Jurassic Yekupedzisira

Mafosiri akawanikwa:

Dashanpu Dinosaur Quarry, Sichuan, China3 1

Kureba

10 kusvika 100 m (33 kusvika 328 ft)2

Kumhanya kwepamusoro

kunenge 15 km/h (9 mph)

Kumhanya, fungidziro

Rairarama rini?

Triassic

Jurassic

Cretaceous

makore mamiriyoni 252 apfuura20114566, dombo guru rakabva mudenga

Raiva hombe sei?

Raiva refu zvakadii?

kureba semotokari 22 dzakamiswa dzakatevedzanakureba semabhanana 560 akatevedzanaraigona kumhanya mamita 100 mumasekonzi 24 (munhu anomhanya kupfuura vose anoda 9.6)

Protognathosaurus raiva hombe sei kana richienzaniswa NEWE?

Masvomhu chete mubrowser yako. Hapana chinochengetwa kana kutumirwa kupi zvako.

Raimhanya zvakadii?

Munhu achifamba kunenge 5 km/h (3 mph)

Mwana ari pabhasikoro kunenge 12 km/h (7 mph)

Protognathosaurus kunenge 15 km/h (9 mph)

Bhiza richimhanya kunenge 65 km/h (40 mph)

Dindingwe kunenge 100 km/h (62 mph)

zvinhu zvinonakidza

Zvinonakidza

Protognathosaurus is known only from a single fossil: the front part of a left lower jaw, called a dentary.1

This dinosaur had 18 to 20 teeth in its lower jaw, and some of them were sharp replacement teeth still growing in.1 2

Its teeth had a sharp point and small serrations (like a steak knife) on the front and back edges.2

The name Protognathosaurus was first used in 1991 by George Olshevsky, because the original name Protognathus was already taken by a beetle.1

Most scientists consider Protognathosaurus a nomen dubium, meaning the fossil is too incomplete to be sure it is a distinct species.1

The jaw bone is thick and heavy, with a deep groove called the Meckelian canal, which is a feature of some early sauropods.2

Mufananidzo wakagadzirwa neAI: Protognathosaurus — Mufananidzo wakagadzirwa neAI unoratidza kuti Protognathosaurus ringangodai raitaridzika sei, wakagadzirwa nekombiyuta kubva pane zvinozivikanwa nemasayendisiti. Ifungidziro chete: mhuka chaiyo ingangodai yaitaridzika zvakasiyana, uye hapana anoziva mavara ayo chaiwo.

wakabvunza

Mibvunzo inonyanya kubvunzwa nezve Protognathosaurus

?How big was Protognathosaurus?

Scientists don't know exactly, because only a jaw bone has been found. It was probably a medium-sized sauropod, maybe 10 to 20 metres long.1 3

?What did Protognathosaurus eat?

It was a herbivore, meaning it ate plants. Its sharp, serrated teeth helped it chew tough leaves.1 3

Zvevanyanzvi vemadhino

Zita resainzi: Protognathosaurus
Akaripa zita:: Olshevsky 19913
Boka: Madhino emitsipa mirefu
Mhuri / boka: Cetiosauridae3
Kurongwa kwemhuka: Sauropodomorpha > Sauropoda3
Zera rematombo: makore mamiriyoni 171 kusvika 155 (Bajocian / Oxfordian)3
Mapoka ematombo: Shaximiao3
Nyika: China3
Zvinyorwa zvemafosiri: 1 mu The Paleobiology Database3
Kuwanikwa: The fossil was found in the Dashanpu Dinosaur Quarry in Sichuan, China. It was named Protognathus oxyodon by Zhang Yihun in 1988, but that name was already used for a beetle, so George Olshevsky renamed it Protognathosaurus oxyodon in 1991.1
Zvichiri kupokanwa: Scientists are not sure if Protognathosaurus is a valid dinosaur or just a doubtful name, because only a piece of jaw has been found.1

Kunobva chokwadi

Protognathosaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Protognathosaurus in The Paleobiology Database (CC BY 4.0): zera, nzvimbo, mapoka ematombo, kurongwa kwemhuka.

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