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Priscaenigma
''Priscaenigma'' is an extinct genus of snakefly of the Priscaenigmatidae family which was described by Whalley in 1985.P. E. S. Whalley. 1985. The systematics and palaeogeography of the Lower Jurassic insects of Dorset, England. Bulletin of the British Museum of Natural History (Geology) 39(3):107-189. Retrieved 12 August 2012. The fossils were found on flatstones at Black Ven in Charmouth, Dorset at in a marine environment of the Charmouth Mudstone Formation. The fossils were collected by J. F. Jackson between 1961 and 1963.F. E. Zeuner. 1962. Fossil insects from the Lower Lias of Charmouth, Dorset. Bulletin British Museum (Natural History) Geology 7:155-171. Retrieved 12 August 2012. Its sister taxa is ''Hondelagia ''Hondelagia'' is an extinct genus of snakefly in the Priscaenigmatidae family. The genus has been described three times under the same taxonomy, but was initially described by A. Bode in 1953. It currently contains one species, the ''Hondelagi ...''. The gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snakefly
Snakeflies are a group of Predation, predatory insects comprising the order (biology), order Raphidioptera with two extant families: Raphidiidae and Inocelliidae, consisting of roughly 260 species. In the past, the group had a much wider distribution than it does now; snakeflies are found in temperate regions worldwide but are absent from the tropics and the Southern Hemisphere. Recognisable representatives of the group first appeared during the Early Jurassic. They are a Relict (biology), relict group, having reached their apex of diversity during the Cretaceous before undergoing substantial decline. An adult snakefly resembles a lacewing in appearance but has a notably elongated thorax which, together with the mobile head, gives the group their common name. The body is long and slender and the two pairs of long, membranous wings are prominently veined. Females have a large and sturdy ovipositor which is used to deposit eggs in some concealed location. They are Holometabolism, h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hondelagia
''Hondelagia'' is an extinct genus of snakefly in the Priscaenigmatidae family. The genus has been described three times under the same taxonomy, but was initially described by A. Bode in 1953. It currently contains one species, the ''Hondelagia reticulata'' which was described by Bode in 1953. Its wing is in length and in width. It was found in Hondelage in Braunschweig Braunschweig () or Brunswick ( , from Low German ''Brunswiek'' , Braunschweig dialect: ''Bronswiek'') is a city in Lower Saxony, Germany, north of the Harz Mountains at the farthest navigable point of the river Oker, which connects it to the Nor .... The genus was later described in 1992 by F. M. Carpenter and in 2002 by M. S. Engel.M. S. Engel. 2002. The smallest snakefly (Raphidioptera: Mesoraphidiidae): a new species in Cretaceous amber from Myanmar, with a catalog of fossil snakeflies. ''American Museum Novitates'' 3363:1-22. Retrieved 12 August 2012. The genus' sister taxa is the extinct Priscaenigm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charmouth Mudstone Formation
The Charmouth Mudstone Formation is a geological formation in England. It preserves fossils dating back to the early part of the Jurassic period (Sinemurian–Pliensbachian). It forms part of the lower Lias Group. It is most prominently exposed at its type locality in cliff section between Lyme Regis and Charmouth (alongside the underlying Blue Lias) but onshore it extends northwards to Market Weighton, Yorkshire, and in the subsurface of the East Midlands Shelf and Wessex Basin. The formation is notable for its fossils, including those of ammonites and marine reptiles and rare dinosaur remains. The formation played a prominent role in the history of early paleontology, with its Lyme Regis-Charmouth exposure being frequented by fossil collectors including Mary Anning. Stratigraphy Shales With Beef Member The Shales With Beef Member is around 28–30 metres thick in the Lyme Regis-Charmouth region and predominantly consists of thinly bedded medium to dark grey mudstone, blocky ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Ven
Black Ven is a cliff in Dorset, England between the towns of Charmouth and Lyme Regis. The cliffs reach a height of . It is part of the Jurassic Coast World Heritage Site. Nearby is an undercliff with an ammonite pavement. The area is popular with tourists due to a number of fossils being found in the area. History The Black Ven has been historically renowned for paleontology. Mary Anning found an ichthyosaurus in The Spittles, and James Harrison found the first fossil remains of a ''Scelidosaurus'' while quarrying Black Ven in 1858. In 2001, the Black Ven and the whole of Lyme Bay became part of the Jurassic Coast World Heritage Site. Geology Black Ven has the largest mudslides in Europe, and this constantly brings new material (such as fossils) to the base of the cliff and beach. The reason for this is the types of stone found through the cliff. There is porous limestone, which lets the water on rough days flow through it, below which you will find clay, which lets water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charmouth
Charmouth is a village and civil parish in west Dorset, England. The village is situated on the mouth of the River Char, around north-east of Lyme Regis. Dorset County Council estimated that in 2013 the population of the civil parish was 1,310. In the 2011 Census the population of the parish, combined with the small parish of Catherston Leweston to the north, was 1,352. History The history of Charmouth dates back to the Iron Age when a Celtic tribe, the Durotriges, founded a settlement. Evidence of hill forts can still be seen in the area. The name Charmouth originated from the Saxon 'Cerne' meaning stony river, Charmouth was therefore known as 'Cernmunde'. Historian George Roberts wrote: During the Saxon period, the neighbouring coast was particularly subject to the invasions of the Danes, concerning whom so much has been written. In 787, the Danes, Northern men, or Normans, landed at Portland from three ships, to reconnoitre the country, which they did without interrupti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorset
Dorset ( ; archaically: Dorsetshire , ) is a county in South West England on the English Channel coast. The ceremonial county comprises the unitary authority areas of Bournemouth, Christchurch and Poole and Dorset (unitary authority), Dorset. Covering an area of , Dorset borders Devon to the west, Somerset to the north-west, Wiltshire to the north-east, and Hampshire to the east. The county town is Dorchester, Dorset, Dorchester, in the south. After the Local Government Act 1972, reorganisation of local government in 1974, the county border was extended eastward to incorporate the Hampshire towns of Bournemouth and Christchurch. Around half of the population lives in the South East Dorset conurbation, while the rest of the county is largely rural with a low population density. The county has a long history of human settlement stretching back to the Neolithic era. The Roman conquest of Britain, Romans conquered Dorset's indigenous Durotriges, Celtic tribe, and during the Ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Insects Of Europe
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic Insects
The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of the Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by an extinction event associated with widespread oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and is the only boundary between geological periods to remain formally undefined. By the beginning of the Jurassic, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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