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Oryctocephalidae
Oryctocephalidae is an extinct family of trilobite in the order Corynexochida. There are more than 20 genera and 60 described species in Oryctocephalidae. Genera These 27 genera belong to the family Oryctocephalidae: * '' Oryctometopus'' Tomashpol'skaya, 1964 * † '' Arthricocephalus'' Bergeron, 1899 * † '' Changaspis'' Lee, 1963 * † '' Cheiruroides'' Kobayashi, 1935 * † '' Curvoryctocephalus'' Zhao & Yuan, 2001 * † '' Duyunaspis'' Chien & Lin, 1978 * † '' Feilongshania'' Qian & Lin, 1980 * † '' Goldfieldia'' Palmer, 1964 * † '' Hunanocephalus'' Lee, 1963 * † '' Kunshanaspis'' Zhang & Zhou, 1985 * † '' Metabalangia'' Qian & Yuan, 1980 * † '' Metarthricocephalus'' Zhao & Yuan, 2001 * † '' Microryctocara'' Sundberg & McCollum, 1997 * † '' Oryctocara'' Walcott, 1908 * † '' Oryctocephalina'' Tomashpolskaya, 1961 * † '' Oryctocephalites'' Resser, 1939 * † '' Oryctocephaloides'' Yuan, 1980 * † '' Oryctocephalops'' Lermontova, 1940 * † ''Oryctocephalus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oryctocephalidae
Oryctocephalidae is an extinct family of trilobite in the order Corynexochida. There are more than 20 genera and 60 described species in Oryctocephalidae. Genera These 27 genera belong to the family Oryctocephalidae: * '' Oryctometopus'' Tomashpol'skaya, 1964 * † '' Arthricocephalus'' Bergeron, 1899 * † '' Changaspis'' Lee, 1963 * † '' Cheiruroides'' Kobayashi, 1935 * † '' Curvoryctocephalus'' Zhao & Yuan, 2001 * † '' Duyunaspis'' Chien & Lin, 1978 * † '' Feilongshania'' Qian & Lin, 1980 * † '' Goldfieldia'' Palmer, 1964 * † '' Hunanocephalus'' Lee, 1963 * † '' Kunshanaspis'' Zhang & Zhou, 1985 * † '' Metabalangia'' Qian & Yuan, 1980 * † '' Metarthricocephalus'' Zhao & Yuan, 2001 * † '' Microryctocara'' Sundberg & McCollum, 1997 * † '' Oryctocara'' Walcott, 1908 * † '' Oryctocephalina'' Tomashpolskaya, 1961 * † '' Oryctocephalites'' Resser, 1939 * † '' Oryctocephaloides'' Yuan, 1980 * † '' Oryctocephalops'' Lermontova, 1940 * † ''Oryctocephalus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovatoryctocara
''Ovatoryctocara'' is a genus of small corynexochid trilobites from the Cambrian, that lived in what now are Siberia, China, Greenland and Canada (Newfoundland). ''Ovatoryctocara'' can be recognised by the combination of the following characters: the central raised area of the cephalon (or glabella) is approximately cylindrical and has two rows of four triangular or round pits. The thorax only has 5 or 6 segments. The tailshield (or pygidium) has an axis (or rhachis) of 6 to 12 rings, the pleural furrows are well developed and the border is absent or narrow as a hair. Etymology The name of the genus is derived from its type ''Oryctocara ovata''. Ovata refers to its oval overall shape, the Ancient Greek ὀρύκτης (oryctos) means "digger", and the Latin cara is a word for "head" or "face". Biostratographic significance The species of the genus ''Ovatoryctocara'' occur near the lower limit of the Middle Cambrian in Siberia. The first appearance datum (FAD) of ''Ovatorycto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Changaspis
''Changaspis'' is an extinct genus of trilobite that lived during the lower Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ... in what is now China. References Sources '' Trilobite info (Sam Gon III)'' External links '' Trilobite info (Sam Gon III)'' Corynexochida genera Oryctocephalidae [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shabaella
''Shabaella'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the Botomian stage, which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million .... References Oryctocephalidae Corynexochida genera Cambrian trilobites Cambrian trilobites of Asia {{Corynexochida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feilongshania
''Feilongshania'' is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the later part of the Botomian stage, which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period. Its name means "nimal Nimal may refer to *Nimal Bandara, Sri Lankan politician *Nimal Gamini Amaratunga, Sri Lankan judge *Nimal Gunaratne, Sri Lankan air force officer *Nimal Mendis, Sri Lankan politician *Nimal Piyatissa (born 1968), Sri Lankan politician *Nimal Raja ...of/from Flying Dragon Mountain". References Oryctocephalidae Cambrian trilobites Fossils of China Corynexochida genera {{corynexochida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oryctocephalus
''Oryctocephalus'' is a genus of trilobite known from the Middle Cambrian Burgess Shale. 24 specimens of ''Oryctocephalus'' are known from the Greater Phyllopod bed, where they comprise 0.42% of the community. This small- to medium-sized trilobite's major characteristics are prominent eye ridges, pleural spines, long genal spines, spines on the pygidium, and notably four furrows connecting pairs of pits on its glabella The glabella, in humans, is the area of skin between the eyebrows and above the nose. The term also refers to the underlying bone that is slightly depressed, and joins the two brow ridges. It is a cephalometric landmark that is just superior to .... Juvenile specimens have been found with only 5 or 6 thoracic segments and about one eighth of adult size, as well as about 2 mm wide.Coppold, Murray and Wayne Powell (2006). ''A Geoscience Guide to the Burgess Shale'', p.60. The Burgess Shale Geoscience Foundation, Field, British Columbia. . References Ext ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corynexochida
Corynexochida is an order of trilobite that lived from the Lower Cambrian to the Late Devonian. Like many of the other trilobite orders, Corynexochida contains many species with widespread characteristics. The middle region of the cephalon (the glabella) is typically elongate, with the sides often spreading forward (pestle-shaped). Some species have glabellae that are ''effaced'', meaning they are smooth and show little detail. The glabellar furrows (when not effaced) typically have a splayed arrangement. In most species, the hind pair on either side of the cephalon become spines that point sharply backwards, and the spinose tips of the anterior pairs of thoracic segments tend to become more and more forward directed toward the pygidium The pygidium (plural pygidia) is the posterior body part or shield of crustaceans and some other arthropods, such as insects and the extinct trilobites. In groups other than insects, it contains the anus and, in females, the ovipositor. It is comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |