Search results
Results from the WOW.Com Content Network
The relatively dome shape of the holotype indicates the specimen was an adult or nearing its completion of its adult transition. Consolidation between flat headed and domed pachycephalosaurs have been greatly debated. Fossils records from more numerous North American specimen suggest a flat domed juvenile stages.
Fossils from the Ordovician are commonplace in the geologic formations which make up the Cincinnati Arch and are commonly studied along man made roadcuts. The Nashville Dome of Tennessee and the Jessamine Dome or Lexington Dome [ 1 ] of central Kentucky make up the central portion of the arch.
The fossils, as described by David Evans and Mark Goodwin et al are identical to all three supposed genera in the placement of the rugose knobs on their skulls, and the unique features of Stygimoloch and Dracorex are thus instead morphologically consistent features on a Pachycephalosaurus growth curve.
Due to the nature of the fossil record, however, it cannot be observed whether or not color played a role in dome function. Longrich, Sankey & Tanke (2010) argued that species recognition is an unlikely evolutionary cause for the dome, because dome forms are not notably different between species. Because of this general similarity, several ...
They noted that the bone composing its skull dome was rich in blood vessels. [4] Peter Dodson argued that the rarity of pachycephalosaurs in the fossil record suggests that they preferred dryer habitats farther from coasts and rivers where ceratopsians and ornithopods lived and where fossilization is more likely to occur. He also observed that ...
Stegoceras is a genus of pachycephalosaurid (dome-headed) dinosaur that lived in what is now North America during the Late Cretaceous period, about 77.5 to 74 million years ago (mya). The first specimens from Alberta , Canada, were described in 1902, and the type species Stegoceras validum was based on these remains.
The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.
A dome is a feature in structural geology where a circular part of the Earth's surface has been pushed upward, tilting the pre-existing layers of earth away from the center. In technical terms, it consists of symmetrical anticlines that intersect each other at their respective apices .