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Holcorpidae
Holcorpidae is an extinct family of scorpionfies. It contains two genera, '' Conicholcorpa'' which is known from the Middle Jurassic Daohugou beds of Inner Mongolia, China, and '' Holcorpa,'' known from the Eocene of North America, including the McAbee Fossil Beds of British Columbia, and the 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 an ... of Colorado. Members of this family are distinguished by their unusually long male genitalia, as well as characteristics of their wing venation. Both '' Miriholcorpa'' and '' Fortiholcorpa'' from the Middle Jurassic of China also have affinities to this family, but the incompleteness of their remains and differences from known holcorpids make their placement uncertain. References {{Taxonbar, from=Q21354327 Mecoptera P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holcorpa
''Holcorpa'' is a genus of extinct insects in the scorpionfly order Mecoptera. Two Eocene age species found in Western North America were placed into the genus, ''H. dillhoffi'' and ''H. maculosa''. ''Holcorpa'' was the only known member of the extinct family Holcorpidae until 2017, when the Middle Jurassic member of the family, '' Conicholcorpa stigmosa'', was described. History and classification When first described ''Holcorpa'' was identified from a single fossil which is preserved as a compression fossil in fine shales of the Florissant Formation. At the time of description, the Florissant formation was considered to be Oligocene in age. Further refinement of the formation's age using radiometric dating of sanidine crystals has resulted in an age of 34 million years old, which places the formation in the Eocene Chadronian stage. Adjustment to the stages of the Eocene placed the formation in the Priabonian as of 2010. The second species is known from a single fossil that w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miriholcorpa
''Miriholcorpa'' is an extinct genus of scorpionfly (Mecoptera) from the Middle Jurassic period of China. The type and only species is ''M. forcipata'', described in 2013. Discovery ''Miriholcorpa'' was discovered in the Jiulongshan Formation at Daohugou Village of Ningcheng County in Inner Mongolia, China. The fossil is late Middle Jurassic in age, from the Callovian–Bathonian boundary (c. 165 million years ago). The genus name derives from the Latin ''miri'' meaning amazing, in reference to the high-quality preservation, and ''Holcorpa'', the type genus of the extinct Mecopteran family Holcorpidae, to which ''Miriholcorpa'' shows similarities. The specific epithet ''forcipata'', is Latin for pincer-like, in reference to the pincer-like structures on the genitalia. Description The holotype is 32.7 mm from head to the tip of the genital bulb. The left forewing, abdominal segments and genitalia are well preserved, while the venation of both hind wings are only partial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fortiholcorpa
''Fortiholcorpa paradoxa'' is an extinct species of scorpionfly (Mecoptera) from the Middle Jurassic of China. It is the only known species of its genus. Discovery ''Fortiholcorpa'' was discovered in the Jiulongshan Formation at Daohugou Village of Ningcheng County in Inner Mongolia, China. The fossil is late Middle Jurassic in age, from the Callovian–Bathonian boundary (c. 165 million years ago). The genus name is a combination of Latin ''fortis'' (meaning strong, in reference to the "exceedingly elongate terminal abdominal segments and enlarged genitalia") and ''Holcorpa'' another Mecopteran with which ''Fortiholcorpa'' shows similarities. The specific epithet ''paradoxa'' means amazing, in reference to the very long abdominal segments. Description The holotype is a male 73.5 mm in length from head to genital tip. The thorax is poorly preserved, with only the mesothorax and metathorax recognizable. The 7th and 8th abdominal segments are exceedingly long in comparison t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mecoptera
Mecoptera (from the Greek: ''mecos'' = "long", ''ptera'' = "wings") is an order of insects in the superorder Endopterygota with about six hundred species in nine families worldwide. Mecopterans are sometimes called scorpionflies after their largest family, Panorpidae, in which the males have enlarged genitals raised over the body that look similar to the stingers of scorpions, and long beaklike rostra. The Bittacidae, or hangingflies, are another prominent family and are known for their elaborate mating rituals, in which females choose mates based on the quality of gift prey offered to them by the males. A smaller group is the snow scorpionflies, family Boreidae, adults of which are sometimes seen walking on snowfields. In contrast, the majority of species in the order inhabit moist environments in tropical locations. The Mecoptera are closely related to the Siphonaptera (fleas), and a little more distantly to the Diptera (true flies). They are somewhat fly-like in appearance, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McAbee Fossil Beds
The McAbee Fossil Beds is a Heritage Site that protects an Eocene Epoch fossil locality east of Cache Creek, British Columbia, Canada, just north of and visible from Provincial Highway 97 / the Trans-Canada Highway ( Highway 1). The McAbee Fossil Beds, comprising , were officially designated a Provincial Heritage Site under British Columbia's Heritage Conservation Act on July 19, 2012. The site is part of an old lake bed which was deposited about 52 million years ago and is internationally recognised for the diversity of plant, insect, and fish fossils found there. Similar fossil beds in Eocene lake sediments, also known for their well preserved plant, insect and fish fossils, are found at Driftwood Canyon Provincial Park near Smithers in northern British Columbia, on the Horsefly River near Quesnel in central British Columbia, and at Republic in Washington, United States. The Princeton Chert fossil beds in southern British Columbia are also Eocene, but primarily preserve an aq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), 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, 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, 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 Anoxic event, oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar, Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daohugou
The Haifanggou Formation (), also known as the Jiulongshan Formation (), is a fossil-bearing rock deposit located near Daohugou () village of Ningcheng County, in Inner Mongolia, northeastern China. The formation consists of coarse conglomerates, sandstone, mudstone, and thin coal layers deposited in deltaic and lacustrine environments. The formation dates to the Callovian of the Middle Jurassic to the Oxfordian of the Late Jurassic. The most prominent locality of the Haifanggou Formation are the Daohugou Beds, located near the village of Daohugou in southeastern Inner Mongolia. Other localities include Wuhuaxigou, Chentaizi, Jiangzhangzi, Wubaiding, Guancaishan, Haifenggou, Fanzhangzi, and Zhuanshanzi. Dating Daohugou bed The age of the Daohugou bed has been debated, and a number of studies, using different methodologies, have reached conflicting conclusions. Various papers have placed the fossils here as being anywhere from the Middle Jurassic period (169 million ye ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene
The Eocene ( ) Epoch is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), 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 Carbon-13, 13C in the atmosphere was exceptionally low in comparison with the more common isotope Carbon-12, 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 Popigai impact structure, Siberia and in what is now ... [...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] |
