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Micropachycephalosaurus (meaning "small thick-headed lizard") is an extinct genus of basal marginocephalian dinosaur containing only the type species, Micropachycephalosaurus hongtuyanensis. It lived in China during the Late Cretaceous ( Campanian ) and was found in the Jiangjunding Formation .
The private sale of fossils has attracted criticism from paleontologists, as it presents an obstacle to fossils being publicly accessible to research. [2] Most countries where relatively complete dinosaur specimens are commonly found have laws against the export of fossils. The United States allows the sale of specimens collected on private ...
Micropachycephalosaurus hongtuyanensis: IVPP V5542 [123] Institute of Vertebrate Paleontology and Paleoanthropology [123] Late Campanian or Early Maastrichtian [107] Jiangjunding Formation, Shandong [123] Partial skull including dentary with fragmentary vertebrae, chevrons, and limb elements [123] The illium associated with the holotype ...
Skulls can be domed, flat, or wedge-shaped depending on the species, and are all heavily ossified. The domes were often surrounded by nodes and/or spikes. Partial skeletons have been found of several pachycephalosaur species, but to date no complete skeletons have been discovered. Often isolated skull fragments are the only bones that are found ...
Pachycephalosaurus is the largest-known pachycephalosaur, known for having an extremely thick, slightly domed skull roof; visually, the structure of the skull suggests a ‘battering ram' function in life, evolved for use as a defensive mechanism or intra-species combat, similar to what is seen with today's bighorn sheep or muskoxen (with male ...
Dong Zhiming described the new genus and species Micropachycephalosaurus hongtuyanensis. [7] He also proposed that the flat-headed pachycephalosaurs constituted a distinct family called the Homalocephalidae. [10] Skull of Gravitholus viewed from above. The arrows point out lesions in the bone.
After finishing high school, Villemarette began cleaning and selling skulls as a side job. [2] After losing his job as a mechanic, he decided to try selling skulls as a full-time occupation. [2] He began by creating a printed list of skulls for sale in 1985. [1] In 1986, Skulls Unlimited was founded as a provider of osteological specimens. [5]
Marginocephalia (/ ˌ m ɑːr dʒ ə n oʊ s ə ˈ f æ l i ə / Latin: margin-head) is a clade of ornithischian dinosaurs that is characterized by a bony shelf or margin at the back of the skull.