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Culmofrons
''Beothukis'' is a rare fossil frond-like member of the Rangeomorpha, described from the Ediacaran of Mistaken Point, Newfoundland. It had been identified since 1992, referred in papers as a "spatulate frond" or "flat recliner", but not formally described until 2009. The original fossils from which the genus has been described are still ''in situ'', but replicas are preserved at the Memorial University of Newfoundland and at the Oxford University Museum of Natural History. Claims of a stem have been contentious, and based largely on structures that have subsequently been determined to be erosional scours, and is so considered to be a recliner Morphology ''Beothukis'' appears as a frond composed of two asymmetrical rows of branches that depart from a central growth axis, 12.5–15.5 cm long and 4.5–6 cm wide. Secondary growth is present around the tip. Secondary order units cross the primary order axes as is common in the Charnida The alternations are irregularly sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charniidae
Charniidae is a family of rangeomorphs. It is the only non-monotypic family of Rangeomorpha. Distribution From the Ediacaran of Australia, Canada, Russia and the United Kingdom, to the Cambrian of Canada. Taxonomy The family presents 6 genera: * †''Beothukis'' * †'' Bomakellia'' * †'' Bradgatia'' * †''Charnia'' * †''Culmofrons ''Beothukis'' is a rare fossil frond-like member of the Rangeomorpha, described from the Ediacaran of Mistaken Point, Newfoundland. It had been identified since 1992, referred in papers as a "spatulate frond" or "flat recliner", but not formall ...'' * †'' Paracharnia'' Gallery Bomakellia_kelleri.JPG , Artists interpretation of the enigmatic '' Bomakellia kelleri''. Charnia.png , Fossil specimen of '' Charnia masoni''. Paracharnia_dengyingensis.png , Artists interpretation of '' Paracharnia dengyingensis''. See also *'' Rangea'' References Rangeomorpha Charniidae Ediacaran life {{Ediacaran-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rangeomorph
The rangeomorphs are a group of Ediacaran Ediacaran biota, fossils. Ediacarans are the oldest large fossil organisms on earth, and many are not self-evidently related to anything else that has ever lived. However, some Ediacarans clearly resemble each other. Palentologists have not been able to agree on what else, if anything, is related to these organisms, so Ediacarans are usually classified into groups based on their appearance. These "Form taxon, form taxa" allow scientists to study and discuss Ediacarans when they cannot know what kind of living things they were, or how they were genetically related to each other. Rangeomorphs look roughly like fern fronds or feathers arranged around a central axis; the group is defined as Ediacarans with a similar appearance and structure to the genus ''Rangea''. Some researchers, such as Pflug and Narbonne, believe all rangeomorphs were more closely related to each other than to anything else. If true, this would make the group a natural tax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ediacaran
The Ediacaran ( ) is a geological period of the Neoproterozoic geologic era, Era that spans 96 million years from the end of the Cryogenian Period at 635 Million years ago, Mya to the beginning of the Cambrian Period at 538.8 Mya. It is the last period of the Proterozoic geologic eon, Eon as well as the last of the so-called "Precambrian supereon", before the beginning of the subsequent Cambrian Period marks the start of the Phanerozoic Eon, where recognizable fossil evidence of life becomes common. The Ediacaran Period is named after the Ediacara Hills of South Australia, where trace fossils of a diverse community of previously unrecognized lifeforms (later named the Ediacaran biota) were first discovered by geologist Reg Sprigg in 1946. Its status as an official geological period was ratified in 2004 by the International Union of Geological Sciences (IUGS), making it the first new geological period declared in 120 years. Although the period took namesake from the Ediacara Hills ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mistaken Point
Mistaken Point Ecological Reserve is a wilderness area and a UNESCO World Heritage Site located at the southeastern tip of Newfoundland's Avalon Peninsula in the Canadian province of Newfoundland and Labrador. The reserve is home to the namesake Mistaken Point Formation, which contains one of the most diverse and well-preserved collections of Precambrian fossils in the world. Ediacaran fossils discovered at the site constitute the oldest known remnants of multicellular life on Earth. Mistaken Point Mistaken Point () is a small headland on the Avalon Peninsula. Historically, Mistaken Point has been mistaken for Cape Race due to the area's typically foggy weather conditions. Sailors making this error would turn north, thinking they had reached Cape Race Harbour, and immediately run into treacherous rocks. History The first fossil to be found in the area, '' Fractofusus misrai'', was discovered in June 1967 by Shiva Balak Misra, an Indian graduate student studying geology at Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newfoundland (island)
Newfoundland ( , ; , ) is a large island within the Canadian province of Newfoundland and Labrador. It is situated off the eastern coast of the Northern America, North American mainland and the geographical region of Labrador. The island contains 29 percent of the province's land area, but is home to over 90% of the province's population, with about 60% of the province's population located on the small southeastern Avalon peninsula. The island is separated from the Labrador Peninsula by the Strait of Belle Isle and from Cape Breton Island by the Cabot Strait. It blocks the mouth of the Saint Lawrence River, creating the Gulf of Saint Lawrence, the world's largest estuary. Newfoundland's nearest neighbour is the French overseas collectivity of Saint Pierre and Miquelon. With an area of , Newfoundland is the List of islands by area, world's 16th-largest island, List of Canadian islands by area, Canada's fourth-largest island, and the largest Canadian island outside Northern Can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Memorial University Of Newfoundland
Memorial University of Newfoundland, or MUN (), is a Public university, public research university in the province of Newfoundland and Labrador, based in St. John's, Newfoundland and Labrador, St. John's, with satellite campuses in Corner Brook, Happy Valley-Goose Bay, Saint Pierre and Miquelon, Saint Pierre, and Harlow, England, Harlow, England. Memorial University offers certificate, diploma, undergraduate, graduate, and post-graduate programs, as well as online courses and degrees. Founded in September 1925 as a memorial to Newfoundlanders and Labradorians who died in the First World War, Memorial is the largest university in Atlantic Canada and Newfoundland and Labrador's only university. As of 2018, there were 1,330 faculty and 2,474 staff, supporting 18,000 students from nearly 100 countries. History Founding At its founding, Newfoundland and Labrador, Newfoundland was a Dominion of Newfoundland, dominion of the United Kingdom. Memorial University began as Memorial Unive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford University Museum Of Natural History
The Oxford University Museum of Natural History (OUMNH) is a museum displaying many of the University of Oxford's natural history specimens, located on Parks Road in Oxford, England. It also contains a lecture theatre which is used by the university's chemistry, zoology and The Mathematical Institute, University of Oxford, mathematics departments. The museum provides the only public access into the adjoining Pitt Rivers Museum. History The university's Honour School of Natural Science started in 1850, but the facilities for teaching were scattered around the city of Oxford in the various Colleges of Oxford University, colleges. The university's collection of anatomy, anatomical and natural history specimens were similarly spread around the city. Regius Professor of Medicine, Sir Henry Acland, initiated the construction of the museum between 1855 and 1860, to bring together all the aspects of science around a central display area. The building was officially opened in 1860, althou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trepassia
''Trepassia'' is a 579 million-year-old fossil of Ediacaran rangeomorph. It was first discovered by Guy M. Narbonne, a professor at Queen's University in Ontario, Canada and colleagues in 2009. Three years later, Martin D. Brasier added additional description to ''Trepassia.'' The generic name is taken from the French word, trépassés, which translates to "those that have departed forever" (or "corpses") and honors the Trepassey community in Newfoundland. It was originally described as ''Charnia wardi''; it was referred under this synonym in a 2016 paper. Morphology ''Trepassia'' is one of the oldest known rangeomorphs and spanned over one meter in length. Longest specimens of ''T. wardae'' reached .M. LAFLAMME, G. M. NARBONNE, C. GREENTREE & M. M. ANDERSON. 2016. Morphology and taphonomy of an Ediacaran frond: Charnia from the Avalon Peninsula of Newfoundland. Department of Geological Sciences and Geological Engineering, Queen’s University, Kingston, Ontario, Canada K7L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bradgatia
''Bradgatia linfordensis'' is a bush-like Ediacaran fossil. It consists of six or more fronds radiating from a central anchor point at the base. It superficially resembles a compressed cabbage in appearance, although in reality it had a more intricate, fractal mode of organisation. When multiple fossils are found together they are regularly spaced out rather than randomly distributed. It dominates the ecosystem at 8 to 22 cm above the mud surface at the bottom the sea where it grew. It was over-towered by ''Charnia ''and '' Charniodiscus ''which grew nearby. ''Bradgatia'' has been found in Charnwood Forest in England, at Mistaken Point and Bonavista Peninsula in Newfoundland and also in British Columbia. These fossils are dated from 565 to 575 mya. It was described by Helen Boynton & Ford in 1995 who published in ''Ediacaran fossils from the Precambrian (Charnian Supergroup) of Charnwood Forest, Leicestershire, England''. Mercian Geol 13 (4) March: 178 oological Record ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Ediacaran Genera
The existence of life, especially that of animals, before the Cambrian had long been the subject of debate in paleontology. The apparent suddenness of the Cambrian explosion had no firm explanation, and Charles Darwin himself recognized the challenge it posed for his theory of evolution. While reports of Precambrian organisms have been made since Alexander Murray's 1868 discovery of ''Aspidella'', it wasn't until the discovery of ''Charnia'' in 1956 that considerable evidence of Precambrian life had been presented. The period immediately preceding the Cambrian, the Ediacaran, is now widely accepted of containing animal life. It spans from 635 to 540 million years ago, and covers approximately 2% of Earth's history. Taxonomists have purported a total of 245 described genera from the Ediacaran, 162 of which are accepted as valid. Key * Valid genus - Genera that are accepted by the scientific community * Synonym (taxonomy), Junior synonym - Alternative name for an already existi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ediacaran Life
The Ediacaran (; formerly Vendian) biota is a taxonomic period classification that consists of all life forms that were present on Earth during the Ediacaran Period (). These were enigmatic tubular and frond-shaped, mostly sessile, organisms. Trace fossils of these organisms have been found worldwide, and represent the earliest known complex multicellular organisms. The term "Ediacara biota" has received criticism from some scientists due to its alleged inconsistency, arbitrary exclusion of certain fossils, and inability to be precisely defined. The Ediacaran biota may have undergone evolutionary radiation in a proposed event called the Avalon explosion, . This was after the Earth had thawed from the Cryogenian period's extensive glaciation. This biota largely disappeared with the rapid increase in biodiversity known as the Cambrian explosion. Most of the currently existing body plans of animals first appeared in the fossil record of the Cambrian rather than the Ediacaran. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
