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Crown Point Formation
The Crown Point Formation is a geologic formation in New York and Vermont. It preserves invertebrate fossils dating back to the Ordovician period. Notable fossiliferous localities within the Crown Point Formation include quarries in the towns of Panton and Isle La Motte, Vermont. Invertebrate Fauna See also * List of fossiliferous stratigraphic units in New York This article contains a list of fossil-bearing stratigraphic units in the state of New York, U.S. Sites See also * Paleontology in New York References * {{DEFAULTSORT:Fossiliferous stratigraphic units in New York New York Stratigrap ... References * Ordovician geology of New York (state) Ordovician geology of Vermont Ordovician southern paleotemperate deposits {{NewYork-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness (geology), thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptolithus
''Cryptolithus'' is a genus of extinct trinucleid trilobites that lived during the Ordovician period. They were mostly blind. They are found in the United States, Canada, Venezuela, the United Kingdom, France, the Czech Republic, Morocco and Turkey. Species Valid species of ''Cryptolithus'' include: * '' Cryptolithus bellulus'' (Ulrich, 1879) * '' Cryptolithus carimatus'' * '' Cryptolithus fittsi'' (Ulrich & Whittington) * '' Cryptolithus goldfussi'' ( Barrande) * '' Cryptolithus inopinatus'' (Whittard) * '' Cryptolithus intertetus'' (Whittard) * '' Cryptolithus lorerainensis'' (Ruedemann) * '' Cryptolithus lorettensis'' (Foerste, 1924) * '' Cryptolithus ornatus'' (Sternberg) * '' Cryptolithus portlockii'' ** '' Cryptolithus portlockii girvanensis'' * '' Cryptolithus quadrillatus'' * '' Cryptolithus recurvus'' (Ulrich, 1919) * '' Cryptolithus tessellatus'' (Green Green is the color between cyan and yellow on the visible spectrum. It is evoked by light which has a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calyptaulax
''Calyptaulax'' (Cooper, 1930) is a genus of trilobites in the order Phacopida that existed during the middle and upper Ordovician in what is now the U.S. states of New York, Oklahoma, Illinois, Missouri, Virginia, Vermont, Nevada, Iowa, Wisconsin, Kentucky, and Iowa, as well as the Canadian provinces of Ontario, Newfoundland and Labrador, Quebec, and the territory of Nunavut. Other countries ''Calyptaulax'' fossils are known from include Ireland, Norway, Russia, and the United Kingdom. ''Type species'' By original designation; ''Calyptaulax glabella'' Cooper, 1930: pp. 388 - 389, pl. 5, figs. 9 - 11. From the Matapedia Group (Ashgill), Perce, Quebec, Canada. P.A. Jell and J.M. Adrain. Other species * ''Calyptaulax annulata'' Raymond, 1905[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceraurinella
''Ceraurinella'' is an extinct genus of trilobite Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the At ... in the family Cheiruridae. There are about 19 described species in ''Ceraurinella''. Species These 19 species belong to the genus ''Ceraurinella'': * † ''Ceraurinella arctica'' Ludvigsen, 1979 * † ''Ceraurinella brevispina'' Ludvigsen, 1979 * † ''Ceraurinella buttsi'' Cooper * † ''Ceraurinella chondra'' Whittington & Evitt, 1953 * † ''Ceraurinella kingstoni'' Chatterton & Ludvigsen, 1976 * † ''Ceraurinella latipyga'' Shaw, 1968 * † ''Ceraurinella longispina'' Ludvigsen, 1979 * † ''Ceraurinella media'' Ludvigsen, 1979 * † ''Ceraurinella nahanniensis'' Chatterton & Ludvigsen, 1976 * † ''Ceraurinella necra'' Ludvigsen, 1979 * † ''Ceraurinella oepiki'' Edgecombe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thaleops
''Thaleops'' is an extinct genus of trilobite of the family Illaenidae. It lived from the Floian to the Katian of the Ordovician in what is now North America. ''Thaleops'' can be told apart from other illaenids because of the cheek spines that many species possess under their eyes. ''Thaleops'' had a large distribution range, With some species being found in parts of Canada to some U.S states including Oklahoma, Wisconsin, and New York. It is thought to have lived in shallow water, as a study published in Oklahoma found that deposits that contained ''Thaleops'' and the asaphid trilobite '' Bumastides'' contained 4 times as many trilobite genera, where associated with shallow water areas. Classification Classification of ''Thaleops'', ''Illaenus ''Illaenus'' is a genus of trilobites from Russia and Morocco, from the middle Ordovician The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million yea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
