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Rikisaurus
Rikisaurus was a marine lizard that swam in the warm seas near New Zealand about 80 million years ago. It was a mosasaur, a relative of today's monitor lizards, but with flippers instead of legs. This predator hunted fish and other sea creatures with its long, pointed snout and many small teeth.31
Noiz bizi izan zen?
Zein handia zen?
Zein luzea zen?
3 txakur bezain luze, sudurretik buztanera🍌bata bestearen atzean jarritako 17 banana bezain luze🏊igerileku handi baten luzera (50 m) 5,5 segundotan egin zezakeen igerianZein handia zen Rikisaurus ZUREKIN alderatuta?
Zure nabigatzaileko kalkulu hutsak. Ez da ezer gordetzen ez inora bidaltzen.
Zein azkarra zen?
Datu dibertigarriak
Rikisaurus had a very long, slender snout that tapered to a point, and its upper jaw had 13 or 14 teeth on each side.1
Its teeth were small, with two ridges (bicarinate), and the enamel was smooth.1
The lower jaw had 15 or 16 teeth and deepened in the middle, giving it a semicircular bump (coronoid).1
Rikisaurus is known from only one fossil: a skull and four neck bones found in New Zealand.1
It lived between 83.6 and 66 million years ago, during the Campanian and Maastrichtian ages of the Late Cretaceous.1
Scientists think Rikisaurus was a small adult mosasaur, about the size of a modern dolphin.1
Rikisaurus: gehien egindako galderak
?Is Rikisaurus a dinosaur?
No, it is a mosasaur, a marine reptile related to today's monitor lizards, not a dinosaur.23
?How big was Rikisaurus?
It was a small adult mosasaur, about the size of a modern dolphin, though exact length is not given in the sources.3
?What did Rikisaurus eat?
It was a carnivore that hunted fish and other sea creatures with its long, pointed snout and many small teeth.3
?Where was Rikisaurus found?
Its only known fossil, a skull and four neck bones, was found in the Mangahouanga Stream in New Zealand.3
Dino adituentzat
- Izen zientifikoa
- Rikisaurus
- Izendatzailea:
- Wiffen 19903
- Taldea
- Mosasauroak
- Familia / klada
- Mosasauridae3
- Sailkapena
- Mosasauroidea3
- Arroken adina
- 84 eta 66 milioi urte artean (Campanian / Maastrichtian)3
- Arroka-formazioak
- Tahora3
- Herrialdeak
- Zeelanda Berria3
- Fosil-erregistroak
- 1 The Paleobiology Database datu-basean3
- Aurkikuntza
- Rikisaurus was named by paleontologist J. Wiffen in 1990, based on a skull and neck bones found in the Tahora Formation of New Zealand.31
- Oraindik eztabaidagai
- Scientists are not sure exactly how big Rikisaurus grew, because only one skull has been found.1
Datuak nondik datozen
- PBDB Taxon (paleobiodb.org)
- Moanasaurus (Wikipedia) (Wikipedia)
- Rikisaurus in The Paleobiology Database (CC BY 4.0): adina, tokiak, arroka-formazioak, sailkapena.
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Mosasaurus
Prognathodon
Tylosaurus
Platecarpus
Clidastes
Globidens
Tyrannosaurus
Triceratops
Velociraptor
Spinosaurus
Ankylosaurus
Parasaurolophus