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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 .
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 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.
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 ...
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.
Map of Utah showing the location of the Cedar Mountain Formation (red). The San Rafael Swell is the dome-like structure that the formation jogs around. Base map data courtesy of geodata.gov. Besides dinosaurs, the Cedar Mountain Formation has produced a wealth of small fossils (a.k.a. microfossils), mostly teeth from a variety of vertebrates.
The weathered dome, standing above the surrounding plain, is known to geologists as a monadnock. The rock is actually only the visible above-ground portion of a segmented ridge, the surface expression of a large igneous batholith , called the Town Mountain Granite, [ 9 ] of middle Precambrian ( 1,082 ± 6 million years ago ) [ 10 ] material ...
Foraminacephale, as a pachycephalosaurid, was a small, bipedal herbivore with a thickened dome on its skull. In 2016, Gregory S. Paul estimated its length at 1.5 metres (4.9 ft), its weight at 10 kilograms (22 lb). [ 2 ]