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Illaenus Alveatus
''Illaenus'' is a genus of trilobites from Russia and Morocco, from the middle Ordovician. Species included in this genus can reach a length of about . They are without glabella and without articulation of the tail. The cephalon has a high profile and recurved genal spines. Eyes are distant from the axis of the head, situated nearer to the edge. Selected species This genus includes about 50 species: *''Illaenus alveatus'' Raymond 1925 *''Illaenus auriculatus'' Ross, Jr. & Barnes 1967 *''Illaenus bayfieldi'' Billings 1859 *''Illaenus bucculentus'' Whittington 1963 *'' Illaenus consimilis'' Billings 1865 *'' Illaenus consobrinus'' Billings 1865 *''Illaenus crassicauda'' Wahlenberg 1826 *'' Illaenus fraternus'' Billings 1865 *''Illaenus gelasinus'' Whittington 1965 *''Illaenus lacertus'' Whittington 1954 *'' Illaenus marginalis'' Raymond 1925 *''Illaenus oscitatus'' Fortey 1980 *''Illaenus slancyensis'' Krylov 2016 *''Illaenus spiculatus'' Whittington 1963 *''Illaenus tauricornis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illaenus Tauricornis
''Illaenus tauricornis'' is a species 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 years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. T .... Etymology The Latin species name ''tauricornis'' means "bull-horned", with reference to the shape of the genal spines. Description ''Illaenus tauricornis'' can reach a length of about . These trilobites are without glabella and without articulation of the tail. The cephalon has a high profile and recurved genal spines. Eyes are distant from the axis of the head, situated nearer to the edge. Usually the cephalon is contracted, due to the contraction of the muscles during the fossilization. References External links American Museum of Natural HistoryFossil ID Ordovician trilobites Illaenina {{Corynexochida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illaenus Lacertus
''Illaenus'' is a genus of trilobites from Russia and Morocco, from the middle Ordovician. Species included in this genus can reach a length of about . They are without glabella and without articulation of the tail. The cephalon has a high profile and recurved genal spines. Eyes are distant from the axis of the head, situated nearer to the edge. Selected species This genus includes about 50 species: *''Illaenus alveatus'' Raymond 1925 *''Illaenus auriculatus'' Ross, Jr. & Barnes 1967 *''Illaenus bayfieldi'' Billings 1859 *''Illaenus bucculentus'' Whittington 1963 *'' Illaenus consimilis'' Billings 1865 *'' Illaenus consobrinus'' Billings 1865 *''Illaenus crassicauda'' Wahlenberg 1826 *'' Illaenus fraternus'' Billings 1865 *''Illaenus gelasinus'' Whittington 1965 *''Illaenus lacertus'' Whittington 1954 *'' Illaenus marginalis'' Raymond 1925 *''Illaenus oscitatus'' Fortey 1980 *''Illaenus slancyensis'' Krylov 2016 *''Illaenus spiculatus'' Whittington 1963 *''Illaenus tauricornis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossils Of Russia
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossils Of Morocco
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordovician Trilobites
The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. The Ordovician, named after the Welsh tribe of the Ordovices, was defined by Charles Lapworth in 1879 to resolve a dispute between followers of Adam Sedgwick and Roderick Murchison, who were placing the same rock beds in North Wales in the Cambrian and Silurian systems, respectively. Lapworth recognized that the fossil fauna in the disputed strata were different from those of either the Cambrian or the Silurian systems, and placed them in a system of their own. The Ordovician received international approval in 1960 (forty years after Lapworth's death), when it was adopted as an official period of the Paleozoic Era by the International Geological Congress. Life continued to flourish during the Ordovician as it did in the earlier Cambrian Pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illaenina
The Illaeninae are a suborder of trilobites in the order 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 .... References {{Taxonbar, from=Q21035191 Corynexochida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corynexochida Genera
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 c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordovician Fauna Of Putilovo Village
The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. The Ordovician, named after the Welsh tribe of the Ordovices, was defined by Charles Lapworth in 1879 to resolve a dispute between followers of Adam Sedgwick and Roderick Murchison, who were placing the same rock beds in North Wales in the Cambrian and Silurian systems, respectively. Lapworth recognized that the fossil fauna in the disputed strata were different from those of either the Cambrian or the Silurian systems, and placed them in a system of their own. The Ordovician received international approval in 1960 (forty years after Lapworth's death), when it was adopted as an official period of the Paleozoic Era by the International Geological Congress. Life continued to flourish during the Ordovician as it did in the earlier Cambr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illaenus Welchi
''Illaenus'' is a genus of trilobites from Russia and Morocco, from the middle Ordovician. Species included in this genus can reach a length of about . They are without glabella and without articulation of the tail. The cephalon has a high profile and recurved genal spines. Eyes are distant from the axis of the head, situated nearer to the edge. Selected species This genus includes about 50 species: *''Illaenus alveatus'' Raymond 1925 *''Illaenus auriculatus'' Ross, Jr. & Barnes 1967 *''Illaenus bayfieldi'' Billings 1859 *''Illaenus bucculentus'' Whittington 1963 *'' Illaenus consimilis'' Billings 1865 *'' Illaenus consobrinus'' Billings 1865 *''Illaenus crassicauda'' Wahlenberg 1826 *'' Illaenus fraternus'' Billings 1865 *''Illaenus gelasinus'' Whittington 1965 *''Illaenus lacertus'' Whittington 1954 *'' Illaenus marginalis'' Raymond 1925 *''Illaenus oscitatus'' Fortey 1980 *''Illaenus slancyensis'' Krylov 2016 *''Illaenus spiculatus'' Whittington 1963 *''Illaenus tauricornis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illaenus Utahensis
''Illaenus'' is a genus of trilobites from Russia and Morocco, from the middle Ordovician. Species included in this genus can reach a length of about . They are without glabella and without articulation of the tail. The cephalon has a high profile and recurved genal spines. Eyes are distant from the axis of the head, situated nearer to the edge. Selected species This genus includes about 50 species: *''Illaenus alveatus'' Raymond 1925 *''Illaenus auriculatus'' Ross, Jr. & Barnes 1967 *''Illaenus bayfieldi'' Billings 1859 *''Illaenus bucculentus'' Whittington 1963 *'' Illaenus consimilis'' Billings 1865 *'' Illaenus consobrinus'' Billings 1865 *''Illaenus crassicauda'' Wahlenberg 1826 *'' Illaenus fraternus'' Billings 1865 *''Illaenus gelasinus'' Whittington 1965 *''Illaenus lacertus'' Whittington 1954 *'' Illaenus marginalis'' Raymond 1925 *''Illaenus oscitatus'' Fortey 1980 *''Illaenus slancyensis'' Krylov 2016 *''Illaenus spiculatus'' Whittington 1963 *''Illaenus tauricornis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illaenus Tumidifrons
''Illaenus'' is a genus of trilobites from Russia and Morocco, from the middle Ordovician. Species included in this genus can reach a length of about . They are without glabella and without articulation of the tail. The cephalon has a high profile and recurved genal spines. Eyes are distant from the axis of the head, situated nearer to the edge. Selected species This genus includes about 50 species: *''Illaenus alveatus'' Raymond 1925 *''Illaenus auriculatus'' Ross, Jr. & Barnes 1967 *''Illaenus bayfieldi'' Billings 1859 *''Illaenus bucculentus'' Whittington 1963 *'' Illaenus consimilis'' Billings 1865 *'' Illaenus consobrinus'' Billings 1865 *''Illaenus crassicauda'' Wahlenberg 1826 *'' Illaenus fraternus'' Billings 1865 *''Illaenus gelasinus'' Whittington 1965 *''Illaenus lacertus'' Whittington 1954 *'' Illaenus marginalis'' Raymond 1925 *''Illaenus oscitatus'' Fortey 1980 *''Illaenus slancyensis'' Krylov 2016 *''Illaenus spiculatus'' Whittington 1963 *''Illaenus tauricornis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illaenus Spiculatus
''Illaenus'' is a genus of trilobites from Russia and Morocco, from the middle Ordovician. Species included in this genus can reach a length of about . They are without glabella and without articulation of the tail. The cephalon has a high profile and recurved genal spines. Eyes are distant from the axis of the head, situated nearer to the edge. Selected species This genus includes about 50 species: *''Illaenus alveatus'' Raymond 1925 *''Illaenus auriculatus'' Ross, Jr. & Barnes 1967 *''Illaenus bayfieldi'' Billings 1859 *''Illaenus bucculentus'' Whittington 1963 *'' Illaenus consimilis'' Billings 1865 *'' Illaenus consobrinus'' Billings 1865 *''Illaenus crassicauda'' Wahlenberg 1826 *'' Illaenus fraternus'' Billings 1865 *''Illaenus gelasinus'' Whittington 1965 *''Illaenus lacertus'' Whittington 1954 *'' Illaenus marginalis'' Raymond 1925 *''Illaenus oscitatus'' Fortey 1980 *''Illaenus slancyensis'' Krylov 2016 *''Illaenus spiculatus'' Whittington 1963 *''Illaenus tauricornis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
