Search results
Results from the WOW.Com Content Network
Scyphocrinus, is an extinct genus of crinoids.Species belonging to this genus lived during the Silurian and Devonian periods (from 443.4 to 358.9 Ma). [1] [2]The crinoid genus Camarocrinus have been considered by some authors the bulbous distal end of the stem of Scyphocrinus, having the function of a root and fixing the crinoid to the sea button.
A stalked crinoid (white) and a comatulid (red) in deep sea, showing the differences between these two sister groups. Most modern crinoids, i.e., the feather stars, are free-moving and lack a stem as adults. Examples of fossil crinoids that have been interpreted as free-swimming include Marsupites, Saccocoma and Uintacrinus. [23]
The fossils occur within an area of 500 square kilometres (190 sq mi), in southeast Morocco's Draa Valley, north of Zagora. Stratigraphically productive layers are found through a 1.1 kilometres (0.68 mi)-thick column of rock that spans the Tremadocian and Floian epochs. [ 6 ]
Geology of Morocco. The geology of Morocco formed beginning up to two billion years ago, in the Paleoproterozoic and potentially even earlier. It was affected by the Pan-African orogeny, although the later Hercynian orogeny produced fewer changes and left the Maseta Domain, a large area of remnant Paleozoic massifs. During the Paleozoic ...
Fossil crinoid. This list of crinoid genera is an attempt to create a comprehensive listing of all genera that have ever been considered to be crinoids, excluding purely vernacular terms.
Pages in category "Fossils of Morocco" The following 144 pages are in this category, out of 144 total. This list may not reflect recent changes. A. Aarabia; Abdounodus;
Articulata are a subclass or superorder within the class Crinoidea, including all living crinoid species. They are commonly known as sea lilies (stalked crinoids) or feather stars (unstalked crinoids). The Articulata are differentiated from the extinct subclasses by their lack of an anal plate in the adult stage and the presence of an ...
Images Bicuspidon. B. hogreli [20] A polyglyphanodontid lizard. Jeddaherdan [21] J. aleadonta. Partial mandible with teeth. An iguanian belonging to the group Acrodonta, possibly a relative of the uromastycine agamids. Argued by Vullo et al. (2022) to actually come from Quaternary beds, and to be based on a fossil material of a member of the ...