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Khathune ya Placodus
Karete ya dinosaure No. 1437 ho tse 2 027

Placodus

Lebitso le bolela: “plate tooth”1
E jele: NamaDihahabi tsa lewatleTriasiki ya Pele ho isa ho Triasiki ya MoraoHa se dinosaure ho ya ka saense

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

Ntlha e monate: sehahabi sena sa lewatle se ne se sesa ha didinosaure di ntse di tsamaya naheng. Bohle ba di bitsa didinosaure, empa e ne e le lekala le leng la dihahabi.
E phetse
dilemo tse dimilione tse 251 ho isa ho 227 tse fetileng3
Triasiki ya Pele ho isa ho Triasiki ya Morao
Difosili di fumanwe ho
Central Europe (Germany, France, Poland) and China13
Bolelele
2.5 ho isa ho 3 m (8.2 ho isa ho 9.8 ft)1
Lebelo le phahameng ka ho fetisisa
e ka bang 16 km/h (10 mph)
Ho sesa, kakanyo

E phetse neng?

Triasiki
Jurasiki
Kretase
Dilemo tse dimilione tse 252 tse fetileng20114566, asteroiti

E ne e le kgolo hakae?

E ne e le telele hakae?

Placodus bolelele ba e ka bang 3 m (9.8 ft)Baesekele ya motho e moholo e ka bang 1.8 m (5.9 ft)Koloi e ka bang 4.5 m (15 ft)Tlou, phoofolo e kgolo ka ho fetisisa naheng kajeno e ka bang 6.5 m (21 ft)
telele jwaloka dintja tse 3 ho tloha nkong ho isa mohatlengtelele jwaloka dibanana tse 17 di behilwe ka molae ne e ka sesa bolelele ba letamo le leholo la ho sesa (50 m) ka metsotswana e 11

Placodus e ne e le kgolo hakae ha e bapiswa le WENA?

Ke dipalo feela ho browser ya hao. Ha ho letho le bolokwang kapa le romelwang kae kapa kae.

E ne e le lebelo hakae?

dintho tse monate

Dintlha tse monate

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

E entswe ke AISetshwantsho sa Placodus se entsweng ke AI
Setshwantsho se entsweng ke AI, se bontshang kamoo Placodus e ka beng e ne e shebahala kateng, se entswe ke khomphutha ho ya ka seo bo-ramahlale ba se tsebang. Ke ho hakanya feela: phoofolo ya nnete e ka nna ya ba e ne e shebahala ka tsela e nngwe, mme ha ho motho ya tsebang mebala ya yona ya nnete.
o botsitse

Dipotso tse botswang haholo ka 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

Bakeng sa ditsebi tsa didinosaure

Lebitso la saense
Placodus
E rehilwe ke
Agassiz 18333
Sehlopha
Dihahabi tsa lewatle
Lelapa / leloko
Placodontidae3
Tlhophiso
Placodontia > Sauropterygia3
Dilemo tsa mafika
dilemo tse dimilione tse 251 ho isa ho 227 ()3
Dibopeho tsa mafika
Jena, Wellenkalk, Vossenveld3
Dinaha
Jeremane, Iseraele, Poland, Netherlands, Itali, Tjhaena3
Direkoto tsa difosili
34 ho The Paleobiology Database3
E boetse e tsejwa e le
Anomosaurus, Crurosaurus (mabitso a kgale jwale a balwa e le phoofolo e le nngwe)3
Ho sibollwa
Placodus was named by the Swiss naturalist Louis Agassiz in 1833. He originally thought the fossils were fish teeth.13

Moo dintlha di tswang teng

  1. Placodus (en.wikipedia.org)
  2. Fossil Focus: Placodonts – PALAEONTOLOGY[online] (palaeontologyonline.com)
  3. Placodus in The Paleobiology Database (CC BY 4.0): dilemo, dibaka, dibopeho tsa mafika, tlhophiso.

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