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Katuni: Placodus
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Placodus

Zita rinoreva: “plate tooth”1
Raidya: NyamaZvinokambaira zvemugungwaTriassic Yekutanga kusvika Triassic YekupedzisiraHarisi dhinosori chaizvo

Placodus was a marine reptile that lived about 240 million years ago, during the Middle Triassic. It had a stocky body, a long tail, and a heavy skull with flat teeth for crushing shellfish. It swam in shallow seas and probably spent most of its time on the seafloor looking for food.1

Chokwadi chinonakidza: chinokambaira ichi chemugungwa chaishambira madhinosori achifamba panyika. Munhu wese anozviti madhino, asi zvaiva bazi rakasiyana rezvinokambaira.
Raivapo
makore mamiriyoni 251 kusvika 227 apfuura3
Triassic Yekutanga kusvika Triassic Yekupedzisira
Mafosiri akawanikwa:
Central Europe (Germany, France, Poland) and China13
Kureba
2.5 kusvika 3 m (8.2 kusvika 9.8 ft)1
Kumhanya kwepamusoro
kunenge 16 km/h (10 mph)
Kushambira, fungidziro

Rairarama rini?

Triassic
Jurassic
Cretaceous
makore mamiriyoni 252 apfuura20114566, dombo guru rakabva mudenga

Raiva hombe sei?

Raiva refu zvakadii?

Placodus kureba kunenge 3 m (9.8 ft)Bhasikoro remunhu mukuru kunenge 1.8 m (5.9 ft)Motokari kunenge 4.5 m (15 ft)Nzou, mhuka hombe kupfuura dzose dzepanyika nhasi kunenge 6.5 m (21 ft)
kureba seimbwa 3 kubva pamhino kusvika kumuswekureba semabhanana 17 akatevedzanaraigona kushambira kureba kwedziva guru rekushambira (50 m) mumasekonzi 11

Placodus raiva hombe sei kana richienzaniswa NEWE?

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

Raimhanya zvakadii?

zvinhu zvinonakidza

Zvinonakidza

1

Placodus had a rigid body because the bones in its spine were dovetailed together, making its trunk stiff.1

2

Its belly was covered with special armor made of bent, right-angled abdominal ribs, and it had a row of bony knobs above its backbone.1

3

Placodus was negatively buoyant, meaning it was heavy and could easily stay on the seafloor without floating up.1

4

Before scientists knew what Placodus looked like, its teeth were mistaken for fish teeth.1

5

Placodus was slow and clumsy on land because of its heavy body armor, so it probably only came ashore to lay eggs.1

6

Its short legs probably ended in webbed feet, and it used its flattened tail to push through the water.1

Zvakagadzirwa neAIMufananidzo wakagadzirwa neAI: Placodus
Mufananidzo wakagadzirwa neAI unoratidza kuti Placodus 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 Placodus

?How big was Placodus?

About 2.5 to 3 metres (8.2 to 9.8 ft) long.1

?What did Placodus eat?

Shellfish like bivalves, plus other hard-shelled prey such as molluscs, brachiopods and crustaceans. It used its chisel-like front teeth to pluck them from the sea floor and its broad, flat back teeth to crush their shells.1

?Was Placodus a dinosaur?

No, Placodus was a marine reptile called a placodont, not a dinosaur. It lived in the sea during the Triassic period.12

?Could Placodus swim?

Yes, it swam using its flattened tail and short legs that probably ended in webbed feet. It was not as good at swimming as later marine reptiles like plesiosaurs, but it was comfortable in the water.1

?Why did Placodus have a rigid body?

Its spine had dovetailed bones that locked together, making its trunk stiff. This helped it stay heavy on the sea floor so it could feed without floating up.1

?When did Placodus live?

About 240 million years ago, in the Middle Triassic period.1

Zvevanyanzvi vemadhino

Zita resainzi
Placodus
Akaripa zita:
Agassiz 18333
Boka
Zvinokambaira zvemugungwa
Mhuri / boka
Placodontidae3
Kurongwa kwemhuka
Placodontia > Sauropterygia3
Zera rematombo
makore mamiriyoni 251 kusvika 227 ()3
Mapoka ematombo
Jena, Wellenkalk, Vossenveld3
Nyika
Germany, Israel, Poland, Netherlands, Italy, China3
Zvinyorwa zvemafosiri
34 mu The Paleobiology Database3
Rinonziwo
Anomosaurus, Crurosaurus (mazita ekare zvino oonekwa semhuka imwe chete)3
Kuwanikwa
Placodus was named by the Swiss naturalist Louis Agassiz in 1833. He originally thought the fossils were fish teeth.13

Kunobva chokwadi

  1. Placodus (en.wikipedia.org)
  2. Fossil Focus: Placodonts โ€“ PALAEONTOLOGY[online] (palaeontologyonline.com)
  3. Placodus in The Paleobiology Database (CC BY 4.0): zera, nzvimbo, mapoka ematombo, kurongwa kwemhuka.

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