|
1992 In Paleontology
Plants Cycads Conifers Angiosperms Arthropods Insects Archosauromorphs * During the 1992 field season a concerted effort was undertaken by the Royal Tyrell Museum to recover the remains of young hadrosaurs. The researchers describe the acquisition that season of 43 specimens as being a success. Most of the recovered fossils were of dentaries missing their teeth, bones from limbs and feet, as well as vertebral centra. * Jack Horner speculated that transitional species evolved in the uppermost part of the Two Medicine Formation during the Bearpaw Transgression. This was during a half-million year span as the transgression inundated the Judith River Formation and, later, the Two Medicine area, gradually destroying the local dinosaurs' preferred habitats. Horner cited certain ceratopsid and pachycephalosaurid species as possible evidence for his hypothesis. Newly named non-avian dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Newly named birds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eostangeria Ruzinciniana
''Eostangeria'' is a morphogenus Form classification is the classification of organisms based on their morphology (biology), morphology, which does not necessarily reflect their biological relationships. Form classification, generally restricted to palaeontology, reflects uncer ... of fossil foliage belonging to the Cycadales. Taxonomy Some leaflets of ''Eostangeria'' had previously described as ferns such as ''Angiopteris''. As late as 1999 there was uncertainty regarding the familial affinities of the genus, with suggested relationship to with either ''Stangeria'' or the Colombian ''Zamia restrepoi''. However with the redescription of ''E. ruzinciniana'' by Uzunova, Palamarev, and Kvacek (2002 in paleontology, 2002) the genus was placed in the cycad family Zamiaceae as the type genus of the monotypic subfamily Eostangerioideae. Distribution ''Eostangeria'' was first described based on material ''E. saxonica'' from the Eocene of the Geisel valley,. Subsequently ''E. ruzi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florissantia Ashwillii
''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] |
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] |
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] |
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] |
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] |
Florissantia Sikhote-alinensis
''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] |
1971 In Paleontology
Plants Angiosperms Conodonts Archosauromorphs Newly named pseudosuchians Newly named dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Newly named onithodirans Newly named birds Newly named pterosaurs References {{Reflist 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 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holmskioldia Quilchenensis
''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] |
Coldwater Beds
The Coldwater Beds are a geologic formation of the Okanagan Highlands in British Columbia, Canada. They preserve fossils dating back to the Ypresian stage of the Eocene period, or Wasatchian in the NALMA classification.Coldwater Beds at Fossilworks.org The formation comprises mudstones, shales and s deposited in a |
Florissantia Quilchenensis
''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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
