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Sequoia Jeholensis
''Sequoia jeholensis'' was a species of redwood tree that existed during Jurassic and Cretaceous periods from 174.7-118.9 MYA. The earlier fossils come from the Middle to Late Jurassic in what is now Liaoning Province, China. Remains dated the Early Cretaceous are known from Inner Mongolia. It is considered one of the earliest known representatives of the genus ''Sequoia (genus), Sequoia''. The discovery of ''S. jeholensis'' suggests that the genus ''Sequoia'' may have originated in Asia before spreading to other regions. Discovery and naming The species was first described by Japanese people, Japanese paleobotanist Seido Endo in 1951 from fossils recovered in the ''Lycoptera'' beds of Lingyuan, Rehe Province, Jehol (modern-day Liaoning, China). These Jurassic deposits are probably from the Haifanggou Formation (sometimes called the Jiulongshan Formation). The fossil material, consisting of a well-preserved branchlet, was recognized for its close resemblance to the foliage of the m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redwood Tree
Sequoioideae, commonly referred to as redwoods, is a subfamily of Pinophyta, coniferous trees within the family (biology), family Cupressaceae, that range in the Northern Hemisphere, northern hemisphere. It includes the List of superlative trees#Largest, largest and tallest trees in the world. The trees in the subfamily are amongst the most notable trees in the world and are common Ornamental plant, ornamental trees. The subfamily reached its peak of diversity during the early Cenozoic. Description The three redwood subfamily genus, genera are ''Sequoia (genus), Sequoia'' from coastal California and Oregon, ''Sequoiadendron'' from California's Sierra Nevada, and ''Metasequoia'' in China. The redwood subfamily contains the largest and tallest trees in the world. These trees can live for thousands of years. Threats include logging, fire suppression, and burl poaching. Only two of the genera, ''Sequoia'' and ''Sequoiadendron'', are known for massive trees. Trees of ''Metasequoia'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lingyuan
Lingyuan () is a city in the west of Liaoning province in Northeast China, bordering Hebei province and Inner Mongolia. It is under the administration of Chaoyang City, which lies to the east-northeast. Administrative Divisions There are eight subdistricts, 11 towns A town is a type of a human settlement, generally larger than a village but smaller than a city. The criteria for distinguishing a town vary globally, often depending on factors such as population size, economic character, administrative stat ..., 10 townships, and one ethnic township under the administration of the city.= Subdistricts: * Nanjie Subdistrict (), Beijie Subdistrict (), Chengguan Town Subdistrict (), Xingyuan Subdistrict (), Dongcheng Subdistrict (), Lingbei Subdistrict (), Hongshan Subdistrict (), Reshuitang Subdistrict () Towns: * Wanyuandian (), Songzhangzi (), Sanshijiazi (), Yangzhangzi (), Dao'erdeng (), Songlingzi (), Siguanyingzi (), Goumenzi (), Xiaochengzi (), Siheda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sequoia Dakotensis
''Sequoites dakotensis'', previously known as ''Sequoia dakotensis'', was a species of plant that existed during the end of the Cretaceous. Originally described as a coniferous tree in the genus '' Sequoia'' from fossils found in the U.S. state of North Dakota, further discoveries in the Canadian province of Saskatchewan indicate that it may have instead belonged to the genus ''Parataxodium''. The species was first described by the paleobotanist Roland W. Brown in 1935 from fossilized cones found in the Hell Creek Formation along the Cannonball River in North Dakota. The cones had no natural connection to foliage, meaning no description of the species's foliage could be given; this was not unusual among ''Sequoia'' species described from fossils. In 1949, the paleobotanist Walter A. Bell renamed the species, moving it to the cupressaceous fossil taxon ''Sequoites dakotensis'', based on cone fossils found near Edmonton. In 2002, a posthumously published paper by Elisabeth E. McIv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Branchlet
A branch, also called a ramus in botany, is a stem that grows off from another stem, or when structures like veins in leaves are divided into smaller veins. History and etymology In Old English, there are numerous words for branch, including , , , and . There are also numerous descriptive words, such as (that is, something that has bled, or 'bloomed', out), (literally 'little bough'), (literally 'on growth'), and (literally 'offspringing'). Numerous other words for twigs and boughs abound, including , which still survives as the ''-toe'' in ''mistletoe''. Latin words for branch are or . The latter term is an affix found in other modern words such as ''cladodont'' (prehistoric sharks with branched teeth), ''cladode'' (flattened leaf-like branches), or ''cladogram'' (a branched diagram showing relations among organisms). Woody branches Large branches are known as boughs and small branches are known as twigs. The term ''twig'' usually refers to a terminus, while ''boug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany and mycology, an isotype is a duplicate of the holotype, generally pieces from the same individual plant or samples from the same genetic individual. A holotype is not necessarily "ty ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jiufotang Formation
The Jiufotang Formation () is an Early Cretaceous geological formation in Chaoyang, Liaoning which has yielded fossils of feathered dinosaurs, primitive birds, pterosaurs, and other organisms (see Jehol Biota). It is a member of the Jehol group. The exact age of the Jiufotang has been debated for years, with estimates ranging from the Late Jurassic to the Early Cretaceous. New Uranium–lead dating, uranium-lead dates reveal the formation is deposited in the Aptian stage of the Early Cretaceous. Fossils of ''Microraptor'' and ''Jeholornis'' are from the Jiufotang. Fossil content Choristoderans Fish Mammaliamorphs Several mammaliamorph specimens have been found from the Jiufotang, but only a few have been formally described and named. Ornithischians Pterosaurs Saurischians A large titanosaur is present in the formation. Enantiornithines Euornithines Non-ornithothoracean theropods Crustaceans Plants See also * Yixian Formation * List of dinosa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous
The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ninth and longest geological period of the entire Phanerozoic. The name is derived from the Latin , 'chalk', which is abundant in the latter half of the period. It is usually abbreviated K, for its German translation . The Cretaceous was a period with a relatively warm climate, resulting in high Sea level#Local and eustatic, eustatic sea levels that created numerous shallow Inland sea (geology), inland seas. These oceans and seas were populated with now-extinct marine reptiles, ammonites, and rudists, while dinosaurs continued to dominate on land. The world was largely ice-free, although there is some evidence of brief periods of glaciation during the cooler first half, and forests extended to the poles. Many of the dominant taxonomic gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haifanggou Formation
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 years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liaoning
) , image_skyline = , image_alt = , image_caption = Clockwise: Mukden Palace in Shenyang, Xinghai Square in Dalian, Dalian coast, Yalu River at Dandong , image_map = Liaoning in China (+all claims hatched).svg , mapsize = 275px , map_alt = Map showing the location of Liaoning Province , map_caption = Map showing the location of Liaoning Province , coordinates = , subdivision_type = Country , subdivision_name = China , named_for = —"Liao River, Liao (River)" —"pacification" "Pacified of the Liao (River)" , seat_type = Capital , seat = Shenyang , seat1_type = , seat1 = , parts_type = Divisions , parts_style = para , p1 = 14 Prefectures of China, prefectures , p2 = 100 Counties of China, counties , p3 = 1511 Townships of China, townships , government_type = Provinces of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rehe Province
Rehe, previously romanized as Jehol, was a former Chinese special administrative region and province centered on the city of Rehe, now known as Chengde. Administration Rehe was north of the Great Wall and east of Mongolia in southwestern Manchuria. Its capital and largest city was Chengde. The second largest city was Chaoyang, followed by Chifeng. The province covered 114,000 square kilometers. History Rehe was once at the core of the Khitan-led Liao Dynasty. Rehe was conquered by the Manchu banners before they took possession of Beijing in 1644. Between 1703 and 1820, the Qing emperors spent almost each summer in their summer Mountain Resort in Chengde. They governed the empire from Chengde, and received their foreign diplomats and representatives of vassal and tributary countries. The Kangxi emperor restricted the admission to the forests and prairies of Rehe to the court's hunting expeditions and to the maintenance of the imperial cavalry. Agricultural settlements ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycoptera
''Lycoptera'' is an extinct genus of fish that lived from Early Cretaceous, Lower Cretaceous, Barremian to Aptian in present-day China, North Korea, Mongolia and Siberia. Although there is record from Jurassic Formation in Siberia, its age remains questionable. It is known from abundant fossils representing sixteen species, which serve as important index fossil used to date geologic formations in China. Along with the genus ''Peipiaosteus'', ''Lycoptera'' has been considered a defining member of the Jehol Biota, a prehistoric ecosystem famous for its feathered dinosaurs, which flourished for 20 million years during the Early Cretaceous, where it occurs abundantly in often monospecific beds, where they are thought to have died in seasonal Mass mortality event, mass death events.Jin, F., Zhang, F.C., Li, Z.H., Zhang, J.Y., Li, C. and Zhou, Z.H. (2008). "On the horizon of ''Protopteryx'' and the early vertebrate fossil assemblages of the Jehol Biota." ''Chinese Science Bulletin'', 53 ... [...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 143.1 Mya. The Jurassic constitutes the second and middle period of the Mesozoic, Mesozoic Era as well as the eighth period of the Phanerozoic, Phanerozoic Eon 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 (CAMP). The beginning of the Toarcian Age started around 183 million years ago and is marked by the Toarcian Oceanic Anoxic Event, a global episode of Anoxic event, oceanic anoxia, ocean acidification, and elevated global temperatures associated with extinctions, likely caused by the eruption of the Kar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
