Protognathosaurus

Nkombo elingi koloba: “early jaw lizard”1

Alyaki: MilonaNkingo milaiJurasiki ya katikati kino Jurasiki ya nsuka

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

Azalaki na bomoi

mbula milio 171 kino 155 eleki3

Jurasiki ya katikati kino Jurasiki ya nsuka

Bafosile emonanaki na

Dashanpu Dinosaur Quarry, Sichuan, China3 1

Bolai

10 kino 100 m (33 kino 328 ft)2

Mbangu ya likolo

pene na 15 km/h (9 mph)

Kopota mbangu, kokanisa

Azalaki na bomoi ntango nini?

Triasiki

Jurasiki

Kretase

Mbula milio 252 eleki20114566, asteroide

Azalaki monene boni?

Azalaki molai boni?

molai lokola bamotuka 22 oyo batelemi na molongomolai lokola matoko 560 oyo balandaniakokaki kopota metele 100 na sekonde 24 (moto oyo aleki mbangu asalelaka 9,6)

Protognathosaurus azalaki monene boni soki tokokanisi na YO?

Kaka matematiki na navigatere na yo. Eloko moko te ebombami to etindami esika moko.

Azalaki na mbangu boni?

Moto oyo azali kotambola pene na 5 km/h (3 mph)

Mwana na velo pene na 12 km/h (7 mph)

Protognathosaurus pene na 15 km/h (9 mph)

Mpunda oyo azali kopota mbangu pene na 65 km/h (40 mph)

Nkoi ya mbangu pene na 100 km/h (62 mph)

makambo ya kitoko

Makambo ya kosepelisa

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

Elilingi ya Protognathosaurus esalemi na AI — Elilingi esalemi na AI oyo ezali kolakisa ndenge Protognathosaurus akokaki kozala. Ordinatere esalaki yango na makambo oyo bato ya siansi bayebi. Ezali kaka kokanisa: nyama ya solo akokaki kozala ndenge mosusu, mpe moto moko te ayebi balangi na ye ya solo.

otunaki

Mituna oyo batunaka mingi na ntina na 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

Mpo na bayebi ya badino

Nkombo ya siansi: Protognathosaurus
Nkombo epesamaki na: Olshevsky 19913
Lisanga: Nkingo milai
Libota / klade: Cetiosauridae3
Klasifikasio: Sauropodomorpha > Sauropoda3
Mbula ya mabanga: mbula milio 171 kino 155 (Bajocian / Oxfordian)3
Milongo ya mabanga: Shaximiao3
Bikolo: Sina3
Bafosile oyo ekomami: 1 na The Paleobiology Database3
Ntango bamonaki yango: 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
Naino bazali kowelana: 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

Esika makambo euti

Protognathosaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Protognathosaurus in The Paleobiology Database (CC BY 4.0): mbula, bisika, milongo ya mabanga, klasifikasio.

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