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Tariccoia
''Tariccoia'' is a genus of nektaspid arthropods belonging to the family Liwiidae, known from fossils found in Ordovician strata in Sardinia and Morocco. It is between and long. It has a headshield (or cephalon) wider than the tailshield (pygidium), and in between them three (or four?) thoracic body segments (somites). Etymology The name of the genus references the Sardinian paleontologist M. Taricco. The species was named after the Riu is Arrus Member, the deposit in which it was found. Description ''Tariccoia arrusensis'' is between 2.5 and 6 cm along the axis, almost half a wide as long. The dorsal exoskeleton consists of a cephalon, a pygidium and two or three thoracic somites with articulating half-rings, all non-calcified. The cephalon is sub-semicircular, widest near the rounded genal angles. The cephalon is wider than the pygidium. Eyes are absent. Antennas are not known. The body is constricted at the two or three thoracic somites, so the animal gives the im ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tariccoia Arrusensis
''Tariccoia'' is a genus of nektaspid arthropods belonging to the family Liwiidae, known from fossils found in Ordovician strata in Sardinia and Morocco. It is between and long. It has a headshield (or cephalon) wider than the tailshield (pygidium), and in between them three (or four?) thoracic body segments (somites). Etymology The name of the genus references the Sardinian paleontologist M. Taricco. The species was named after the Riu is Arrus Member, the deposit in which it was found. Description ''Tariccoia arrusensis'' is between 2.5 and 6 cm along the axis, almost half a wide as long. The dorsal exoskeleton consists of a cephalon, a pygidium and two or three thoracic somites with articulating half-rings, all non-calcified. The cephalon is sub-semicircular, widest near the rounded genal angles. The cephalon is wider than the pygidium. Eyes are absent. Antennas are not known. The body is constricted at the two or three thoracic somites, so the animal gives the im ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buenaspis Forteyi
''Buenaspis'' is a genus of small ( long) nektaspid arthropod, that lived during the early Cambrian period.Budd, G.E (1999).A Nectaspid Arthropod from the Early Cambrian Sirius Passet Fauna, with a description of Retrodeformation based on Functional Morphology. ''Palaeontology'', 42(1):99–122 Fossil remains of ''Buenaspis'' were collected from the Lower Cambrian Sirius Passet ''Lagerstätte'' of North Greenland. ''Buenaspis'' looks like a soft eyeless trilobite. It has a headshield (or cephalon) slightly larger than the tailshield (pygidium), and in between them six thoracic body segments (somites). The genus is monotypic, its sole species being ''Buenaspis forteyi''. Etymology The name of the genus is derived from the Buen Formation, the deposit where the species was collected, and the Greek word ''aspis'' (shield). The species was named in honor of Richard Fortey, a famed paleontologist. Description ''Buenaspis forteyi'' is between 1 and 3 cm along the axis, appr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soomaspis
''Soomaspis'' is a genus of small to average size (about 3 cm or 1.2-inch long) marine arthropods in the Liwiidae Family, that lived during the late Ordovician (early Hirnantian). Fossil remains of ''Soomaspis'' were collected from the Soom Shale Lagerstätte in Western Cape, South Africa. ''Soomaspis'' looks like a large, soft agnostid trilobite. It has a headshield (or cephalon) wider than the tailshield (pygidium), and in between them three thoracic body segments (somites). The genus is monotypic, its sole species being ''Soomaspis splendida''. Etymology The name of the genus is a compound word of the deposit where the species was collected (the Soom Shale), and the Greek word ''"aspis"'' (shield). The species epithet, ''splendida'' comes from the Latin word ''"splendere"'' (brightness). Description ''Soomaspis splendida'' is estimated to be over 3 cm (1.2 inches) along the axis,L. Ramskold, J.-Y. Chen, G.D. Edgecombe, and G.-Q. Zhou (1996). "Preservational fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liwiidae
Liwiidae is a family of arthropods in the order Nektaspida. Members are known from the Cambrian and 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 ... periods. Taxonomy *'' Liwia'' Dzik and Lendzion, 1988 :*'' Liwia plana'' Lendzion, 1975 :*'' Liwia convexa'' Lendzion, 1975 *'' Soomaspis'' Fortey & Theron, 1995 :*'' Soomaspis splendida'' Fortey & Theron, 1995 *'' Tariccoia'' Hammann ''et al.'', 1990 :*'' Tariccoia arrusensis'' Hammann ''et al.'', 1990 References Nektaspida Prehistoric arthropod families Cambrian first appearances Ordovician first appearances {{nektaspida-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nektaspida
Nektaspida (also called Naraoiida, Nektaspia and Nectaspida) is an extinct order of non- mineralised artiopodan arthropods. They are known from the mid-Cambrian to the upper Silurian. Originally classified as trilobites, which they superficially resemble, they are now placed as close relatives as members of the Trilobitomorpha within Artiopoda. The order is divided into three major families; Emucarididae, Liwiidae, and Naraoiidae. Naming history and taxonomic placement The order was originally proposed by Raymond in 1920 as Nektaspia. Størmer corrected it to Nectaspida for the 1959 ''Treatise on Invertebrate Paleontology'' to conform with the names of the other trilobite orders. Whittington described it in 1985 with the spelling Nektaspida; the revised 1997 Treatise by Raymond and Fortey uses this spelling, as do other modern works. Whittington (1985) placed the order in the Trilobita. Cotton & Braddy (2000) place it in a new "Trilobite clade" containing the Trilobita, recogni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nektaspid
Nektaspida (also called Naraoiida, Nektaspia and Nectaspida) is an extinct order (biology), order of non-Mineralized tissues, mineralised artiopodan arthropods. They are known from the mid-Cambrian to the upper Silurian. Originally classified as trilobites, which they superficially resemble, they are now placed as close relatives as members of the Trilobitomorpha within Artiopoda. The order is divided into three major families; Emucarididae, Liwiidae, and Naraoiidae. Naming history and taxonomic placement The order was originally proposed by Raymond in 1920 as Nektaspia. Størmer corrected it to Nectaspida for the 1959 ''Treatise on Invertebrate Paleontology'' to conform with the names of the other trilobite orders. Whittington described it in 1985 with the spelling Nektaspida; the revised 1997 Treatise by Raymond and Fortey uses this spelling, as do other modern works. Harry Blackmore Whittington, Whittington (1985) placed the order in the Trilobite, Trilobita. Cotton & Braddy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossils Of Italy
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 Arthropods
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 Perio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tremadocian
The Tremadocian is the lowest stage of Ordovician. Together with the later Floian Stage it forms the Lower Ordovician Epoch. The Tremadocian lasted from to million years ago. The base of the Tremadocian is defined as the first appearance of the conodont species ''Iapetognathus fluctivagus'' at the Global Boundary Stratotype Section and Point (GSSP) section on Newfoundland. Naming The Tremadocian is named after the village Tremadoc in Wales. The name was proposed by Adam Sedgwick in 1846 (as "Tremadoc group"). GSSP The GSSP for the beginning of the Tremadocian is the Greenpoint section () in Gros Morne National Park, in western Newfoundland. It is defined as the first appearance of the conodont species ''Iapetognathus fluctivagus''. This horizon can be found 101.8 m above the Greenpoint section datum within bed number 23. The boundary lies within the Broom Point Member, of the Green Point Formation which is part of the Cow Head Group. The first planktonic graptolites appear 4.8 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monte Argentu Formation
Monte may refer to: Places Argentina * Argentine Monte, an ecoregion * Monte Desert * Monte Partido, a ''partido'' in Buenos Aires Province Italy * Monte Bregagno * Monte Cassino * Montecorvino (other) * Montefalcione Portugal * Monte (Funchal), a civil parish in the municipality of Funchal * Monte, a civil parish in the municipality of Fafe * Monte, a civil parish in the municipality of Murtosa * Monte, a civil parish in the municipality of Terras de Bouro Elsewhere * Monte, Haute-Corse, a commune in Corsica, France * Monte, Switzerland, a village in the municipality Castel San Pietro, Ticino, Switzerland * Monte, U.S. Virgin Islands, a neighborhood * Monte Lake, British Columbia, Canada Arts, entertainment, and media * ''Monte'' (film), a 2016 drama film by Amir Naderi * Three-card Monte * Monte Bank or Monte, a card game Other uses * Monte (dessert) a milk cream dessert produced by the German dairy company Zott * Monte (mascot), the mascot of the University of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
