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Porana Speirii
''Florissantia'' is an extinct genus of flowering plants in the Malvaceae subfamily Sterculioideae known from western North America and far eastern Asia. Flower, fruit, and pollen compression fossils have been found in formations ranging between the Early Eocene through to the Early Oligocene periods. The type species is ''Florissantia speirii'' and three additional species are known, ''Florissantia ashwillii'', ''Florissantia quilchenensis'', and ''Florissantia sikhote-alinensis''. Distribution Fossils of ''Florissantia'' have been found in Early Eocene to Middle Oligocene localities, including fossil beds in Alaska, British Columbia, Colorado, Montana, Oregon, Utah, Washington, Wyoming and the Russian far east. The type species ''F. speirii'' is known from a number of formations in the west, with the type locality being the Florissant Formation of Colorado. The formation is composed of successive lake deposits resulting from a volcanic debris flow damming a va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leo Lesquereux
Charles Léo Lesquereux (November 18, 1806 – October 25, 1889) was a Swiss-born bryologist and a pioneer of American paleobotany who studied the formation of peat bogs. Career Lesquereux was born in the town of Fleurier, located in the canton of Neuchâtel. Despite the fact Lesquereux lacked formal training in botany, he became a celebrated and much published figure in the field of paleobotany. Until 1827 he took classes at the academy at Neuchâtel, and subsequently worked as a tutor of French language in Eisenach, Germany(at the time Prussia). There he tutored many higher-class individuals, including some children of royalty. Afterwards he returned to Switzerland as a schoolteacher, and later principal at the College of La Chaux-de-Fonds. In 1833 he suffered a total loss of hearing due illness and a fall from a cliff. He attempted to obtained treatment from a noted French otologist Jean-Marc Gaspard Itard but was treated disrespectfully and given painful injections of fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florissant Formation
The Florissant Formation is a sedimentary geologic formation outcropping around Florissant, Teller County, Colorado. The formation is noted for the abundant and exceptionally preserved insect and plant fossils that are found in the mudstones and shales. Based on argon radiometric dating, the formation is Eocene (approximately 34 million years old ) in age and has been interpreted as a lake environment. The fossils have been preserved because of the interaction of the volcanic ash from the nearby Thirtynine Mile volcanic field with diatoms in the lake, causing a diatom bloom. As the diatoms fell to the bottom of the lake, any plants or animals that had recently died were preserved by the diatom falls. Fine layers of clays and muds interspersed with layers of ash form "paper shales" holding beautifully-preserved fossils. The Florissant Fossil Beds National Monument is a national monument established to preserve and study the geology and history of the area. History The name ''Fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malvaceae
Malvaceae, or the mallows, is a family of flowering plants estimated to contain 244 genera with 4225 known species. Well-known members of economic importance include okra, cotton, cacao and durian. There are also some genera containing familiar ornamentals, such as ''Alcea'' (hollyhock), ''Malva'' (mallow), and ''Tilia'' (lime or linden tree). The largest genera in terms of number of species include ''Hibiscus'' (300 species), ''Sterculia'' (250 species), ''Dombeya'' (250 species), '' Pavonia'' (200 species) and '' Sida'' (200 species). Taxonomy and nomenclature The circumscription of the Malvaceae is controversial. The traditional Malvaceae '' sensu stricto'' comprise a very homogeneous and cladistically monophyletic group. Another major circumscription, Malvaceae ''sensu lato'', has been more recently defined on the basis that genetics studies have shown the commonly recognised families Bombacaceae, Tiliaceae, and Sterculiaceae, which have always been considered closely allie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holmskioldia Speirii
''Florissantia'' is an extinct genus of flowering plants in the Malvaceae subfamily Sterculioideae known from western North America and far eastern Asia. Flower, fruit, and pollen compression fossils have been found in formations ranging between the Early Eocene through to the Early Oligocene periods. The type species is ''Florissantia speirii'' and three additional species are known, ''Florissantia ashwillii'', ''Florissantia quilchenensis'', and ''Florissantia sikhote-alinensis''. Distribution Fossils of ''Florissantia'' have been found in Early Eocene to Middle Oligocene localities, including fossil beds in Alaska, British Columbia, Colorado, Montana, Oregon, Utah, Washington, Wyoming and the Russian far east. The type species ''F. speirii'' is known from a number of formations in the west, with the type locality being the Florissant Formation of Colorado. The formation is composed of successive lake deposits resulting from a volcanic debris flow damming a valley. When th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1953 In Paleontology
Plants Angiosperms Dinosaurs Newly named dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Synapsids Non-mammalian References {{portal, Paleontology 1950s in paleontology Paleontology Paleontology (), also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holocene epoch (roughly 11,700 years before present). It includes the study of fossi ... Paleontology 3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florissantia Species Flower
''Florissantia'' can refer to: * ''Florissantia'' (plant), an extinct plant genus in the family Malvaceae * ''Florissantia'' (planthopper), an extinct dictyopharid planthopper insect genus {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craspedodon
''Craspedodon'' (meaning 'edge tooth') is an extinct genus of ornithischian dinosaur, possibly a ceratopsian. It lived during the Late Cretaceous (Santonian stage, around 85 million years ago), in what is now Belgium. Only a few teeth have ever been found, which were described as similar to those of ''Iguanodon''. ''Craspedodon lonzeensis'', described by Louis Dollo in 1883,Dollo, L., 1883, "Note sur les restes de dinosauriens rencontrées dans le Crétacé supérieure de la Belgique", ''Bulletin du Musée royale d' Histoire naturelle de Belgique, 2: 205-221 is the type species, although it is considered a ''nomen dubium'' since it is based on fragmentary material (teeth only). It was long thought to be an iguanodontian, but a 2007 restudy suggested that it was actually a neoceratopsian, perhaps closer to Ceratopsoidea than Protoceratopsidae. If the reidentification is correct, ''Craspedodon'' would be the first neoceratopsian known from Europe. See also * Timeline of ceratops ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthomerus
''Orthomerus'' (meaning "straight femur") is a genus of dubious hadrosaurid dinosaur from the Late Cretaceous of the Netherlands. It is today an obscure genus, but in the past was conflated with the much better known ''Telmatosaurus''. Discovery and history The type species ''Orthomerus dolloi'' was in 1883 named by the well-known British paleontologist Harry Govier Seeley. The genus name is derived from the Greek ὀρθός (''orthos''), "straight", and μηρός (''meros''), "thigh". The specific name honours the French/Belgian paleontologist Louis Dollo, who had identified the bones in August 1882, during a visit to London. The type specimen, formed by the syntypes BMNH 42954-57, was probably found in the chalkstone quarries of the Sint-Pietersberg near the city of Maastricht, The Netherlands. It mainly consists of partial juvenile skeletal elements. These remains are from the Maastricht Formation of the late Maastrichtian stage of the Late Cretaceous, about 66 million y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Dubium
In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a specimen belongs to that group or not. This may happen if the original type series (i. e. holotype, isotype, syntype or paratype) is lost or destroyed. The zoological and botanical codes allow for a new type specimen, or neotype, to be chosen in this case. A name may also be considered a ''nomen dubium'' if its name-bearing type is fragmentary or lacking important diagnostic features (this is often the case for species known only as fossils). To preserve stability of names, the ''International Code of Zoological Nomenclature'' allows a new type specimen, or neotype, to be chosen for a ''nomen dubium'' in this case. 75.5. Replacement of unidentifiable name-bearing type by a neotype. When an author considers that the taxonomic identity of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harry Govier Seeley
Harry Govier Seeley (18 February 1839 – 8 January 1909) was a British paleontologist. Early life Seeley was born in London on 18 February 1839, the second son of Richard Hovill Seeley, a goldsmith, and his second wife Mary Govier. When his father was declared bankrupt, Seeley was sent to live with a family of piano makers. Between the ages of eleven and fourteen, he went to a day school and then spent the next two years learning to make pianos. He also attended lectures at the Royal School of Mines by Thomas Henry Huxley, Edward Forbes, and other notable scientists. In 1855, with the support of his uncle, Seeley began to study law but shortly gave it up to pursue a career as an actuary. In the late 1850s, he studied English and mathematics at the Working Men's College and served as a secretary for the college's museum. He also worked in the library of the British Museum, where Samuel Pickworth Woodward encouraged him to study geology. In 1859, Seeley began studies at Sidney S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
