▪ dinosaur genus
 primitive member of the horned dinosaurs (dinosaur) (Ceratopsia (ceratopsian)) found as fossils dating from 100 million to 122 million years ago in Early Cretaceous Period deposits of Mongolia and China.

      Psittacosaurus measured about 2 metres (6.5 feet) long and was probably bipedal most of the time. The skull was high and narrow and is characterized by a small bone (rostral) that forms the upper beak. The anterior region of the skull was shaped very much like a parrot's (parrot) beak in that the upper jaw curved over the lower, hence the dinosaur's name (psittac being derived from the Latin term for parrot). Apart from these unusual features, Psittacosaurus appears likely to have evolved from bipedal ornithopod dinosaurs sometime in the Late Jurassic (Jurassic Period) (154 million to 144 million years ago) or very Early Cretaceous Period (144 million to 99 million years ago).

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Look at other dictionaries:

  • Psittacosaurus — Rekonstruktion von Psittacosaurus mongoliensis Zeitraum Untere Kreide 140 bis 100 Mio. Jahre Fundorte …   Deutsch Wikipedia

  • Psittacosaurus — Psittacosaure Fa …   Wikipédia en Français

  • Psittacosaurus — Taxobox name = Psittacosaurus fossil range = Early Cretaceous image width = 200px image caption = Mounted cast of a Psittacosaurus mongoliensis skull at the Australian Museum, Sydney. regnum = Animalia phylum = Chordata classis = Sauropsida… …   Wikipedia

  • Psittacosaurus —   Psittacosaurus …   Wikipedia Español

  • Psittacosaurus — Psittacosaure Psittacosaure …   Wikipédia en Français

  • psittacosaurus — noun Any of several dinosaurs, of the genus Psittacosaurus, that lacked horns …   Wiktionary

  • psittacosaurus — noun primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind limbs and short forelimbs; may have been bipedal • Syn: ↑psittacosaur • Hypernyms: ↑ceratopsian, ↑horned dinosaur • Member Holonyms: ↑genus… …   Useful english dictionary

  • Psittacosaurus — …   Википедия

  • psittacosaurus — /sɪtəkoʊˈsɔrəs/ (say situhkoh sawuhs) noun a small bipedal herbivorous dinosaur of the early Cretaceous period, inhabiting what is now Asia. {Greek psittakos parrot (from the parrot like beak) + saurus} …   Australian English dictionary

  • Species of Psittacosaurus — Seventeen species have been assigned to the extinct ceratopsian dinosaur genus Psittacosaurus , although only nine to eleven are considered valid.Xu Xing Zhao Xijin. (1999). Psittacosaur fossils and their stratigraphical implications. In: Wang Y …   Wikipedia

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