List of Psittacosaurus Species

List Of Psittacosaurus Species

Seventeen species have been assigned to the extinct ceratopsian dinosaur genus Psittacosaurus, although only nine to eleven are considered valid. This is the greatest number of valid species assigned to any single dinosaur genus (not including birds). By contrast, most dinosaur genera contain only a single species.

As some species are known only from skull material, species of Psittacosaurus are primarily distinguished by features of the skull and teeth. Several species can be recognized by features of the pelvis as well. Overall size estimates of most species have not been published or are unavailable due to lack of fossil preservation. However, measurements of the skull or femur have been published for all well-established species and can be used as a basis for comparison. Species are listed in the order in which they were described, except for synonyms, which are described with the senior synonym.

Read more about List Of Psittacosaurus Species:  Psittacosaurus Mongoliensis (type), Psittacosaurus Sinensis, Psittacosaurus Xinjiangensis, Psittacosaurus Meileyingensis, Psittacosaurus Sattayaraki, Psittacosaurus Neimongoliensis, Psittacosaurus Ordosensis, Psittacosaurus Mazongshanensis, Psittacosaurus Sibiricus, Psittacosaurus Lujiatunensis, Psittacosaurus Major, Psittacosaurus Gobiensis, Unassigned Specimens

Famous quotes containing the words list of, list and/or species:

    A man’s interest in a single bluebird is worth more than a complete but dry list of the fauna and flora of a town.
    Henry David Thoreau (1817–1862)

    We saw the machinery where murderers are now executed. Seven have been executed. The plan is better than the old one. It is quietly done. Only a few, at the most about thirty or forty, can witness [an execution]. It excites nobody outside of the list permitted to attend. I think the time for capital punishment has passed. I would abolish it. But while it lasts this is the best mode.
    Rutherford Birchard Hayes (1822–1893)

    Genius detects through the fly, through the caterpillar, through the grub, through the egg, the constant individual; through countless individuals the fixed species; through many species the genus; through all genera the steadfast type; through all the kingdoms of organized life the eternal unity. Nature is a mutable cloud which is always and never the same.
    Ralph Waldo Emerson (1803–1882)