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Yanan Formation
The Yanan Formation, alternatively spelled the Yan'an Formation (), is a geological formation in China, it is also alternatively considered a Group (stratigraphy), group. The age of the formation is uncertain, with estimates ranging from Toarcian to Bajocian. It is divided up into 5 members, with the designation of Y1 through Y5. Y2, Y3 and Y4 are predominantly dark shales, while Y1 and Y5 are composed of sandstones, coal beds and interbedded mudstones. The depositional environment at the time was when the Ordos Basin formed a large inland lake, surrounded by floodplains. The dark shales have been explored for the potential of producing shale gas. The coal has also been explored for the production of coalbed methane. The formation is also notable for its fossil content, with dinosaur footprints having been found in the formation. The dinosaur ''Lingwulong'' was formerly thought to have been found in this formation, but the strata was later attributed to the overlying Zhiluo Formati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Formation
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness (geology), thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bajocian
In the geologic timescale, the Bajocian is an age and stage in the Middle Jurassic. It lasted from approximately 170.9 ±0.8 Ma to around 168.2 ±1.2 Ma (million years ago). The Bajocian Age succeeds the Aalenian Age and precedes the Bathonian Age. Stratigraphic definitions The Bajocian Stage takes its name from the Latin name (Bajocae) of the town of Bayeux, in the region of Normandy in France. The stage was named and introduced in scientific literature by French palaeontologist Alcide d'Orbigny in 1842. The base of the Bajocian stage is defined as the place in the stratigraphic column where fossils of the ammonite genus '' Hyperlioceras'' first appear. A global reference profile (a GSSP) for the base is located at Murtinheira, close to Cabo Mondego in Portugal.The GSSP is described by Pavia & Enay (1997) The top of the Bajocian (the base of the Bathonian) is at the first appearance of ammonite species ''Parkinsonia convergens''. Subdivision The Bajocian is often divided ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemiptera
Hemiptera (; ) is an order of insects, commonly called true bugs, comprising more than 80,000 species within groups such as the cicadas, aphids, planthoppers, leafhoppers, assassin bugs, bed bugs, and shield bugs. They range in size from to around , and share a common arrangement of piercing-sucking mouthparts. The name "true bugs" is sometimes limited to the suborder Heteroptera. Entomologists reserve the term ''bug'' for Hemiptera or Heteroptera,Gilbert Waldbauer. ''The Handy Bug Answer Book.'' Visible Ink, 1998p. 1. which does not include other arthropods or insects of other orders such as ants, bees, beetles, or butterflies. In some varieties of English, all terrestrial arthropods (including non-insect arachnids and myriapods) also fall under the colloquial understanding of ''bug''. Many insects with "bug" in their common name, especially in American English, belong to other orders; for example, the lovebug is a fly and the Maybug and ladybug are beetles. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archijassidae
Archijassidae is an extinct family of leafhoppers known from the Late Triassic to the early Late Cretaceous. It is the oldest member of Membracoidea, and is considered ancestral to modern leafhoppers and treehoppers. Taxonomy Shcherbakov 2012 divided the family into 3 subfamilies, Shcherbakov considered the subfamily Dellasharinae to be ancestral to modern treehoppers and leafhoppers. * †'' Formosixinia'' Chen and Wang 2019 Burmese amber, Myanmar, Cenomanian ** †''Formosixinia aeterna'' Chen and Wang 2019 * †subfamily Archijassinae Becker-Migdisova 1962 ** †'' Archijassus'' Handlirsch 1906 *** †''Archijassus heeri'' Geinitz 1880 Green Series, Germany, Toarcian *** †''Archijassus minimus'' Martynov 1926 Karabastau Formation, Kazakhstan, Callovian *** †''Archijassus minutus'' Heer 1865 Insektenmergel Formation, Switzerland, Hettangian *** †''Archijassus morio'' Heer 1865 Insektenmergel Formation, Switzerland, Hettangian *** †''Archijassus plurinervis'' Zhang 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kisa (insect)
Kisa or KISA may refer to: People * Janet Kisa (born 1992), Kenyan runner * Kisa Gotami, disciple of Buddha * Rostislav Kiša (born 1978), Czech footballer Places * Khisa, also known as Kisa, a village in Botswana * Kisa, Hiroshima, a former town in Hiroshima Prefecture, Japan, now merged with Miyoshi ** Kisa Station, a train station in Miyoshi * Kisa, Iran, a village in Hormozgan Province, Iran * Kisa, Sweden, a town in Östergötland County, Sweden Organizations * Kisa BK, a Swedish football club * KISA-LD, a low-power television station (channel 22, virtual 40) licensed to serve San Antonio, Texas, United States * KISA (Cypriot organisation) The Movement for Equality, Support, Anti-Racism (, abbr. ΚΙΣΑ – KISA), is a Cypriot Non-Governmental Organisation. The organisation has two main remits: campaigning against discrimination in all forms on the island, including racism and se ..., the Movement for Equality, Support, Anti-Racism (Greek: Κίνηση για Ισότ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epiprocta
Epiprocta, also called Epiproctophora, is one of the two extant suborders of the Odonata, which contains living dragonflies (Anisoptera), as well as Epiophlebioptera, which has a single known living genus '' Epiophlebia.'' Crown group Epiprocta first appeared during the Early Jurassic. It was proposed in 1992 by Heinrich Lohmann to accommodate the inclusion of the Anisozygoptera. The latter has been shown to be not a natural suborder, but rather a paraphyletic collection of lineages, so it has been combined with the previous suborder Anisoptera, the well-known dragonflies, into the Epiprocta. The old suborder Anisoptera is proposed to become an infraorder Order () is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between Family_(biology), family and Class_(biology), class. In biological classification, the order is a taxonomic rank used in the classific ... within the Epiprocta, whereas the "anisozygopterans" included here form the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campterophlebiidae
Campterophlebiidae is an extinct family of damsel-dragonflies native to Eurasia from the Late Triassic to the Early Cretaceous. Taxonomy The family has around 40 recognised genera, with fossils known from China, Germany, Kazakhstan, Kyrgyzstan, Luxembourg, Mongolia, the Russian Federation, and the United Kingdom. *'' Adelophlebia'' *'' Amnifleckia'' *'' Angaroneura'' *'' Angustiphlebia'' *'' Azarphlebia'' *'' Bathmophlebia'' *'' Bellabrunetia'' *'' Campterophlebia'' *'' Ctenogampsophlebia'' *'' Dorsettia'' *'' Gallodorsettia'' *'' Gampsophlebia'' *'' Honghea'' *'' Hsiufua'' *'' Hypsomelana'' *'' Hypsophlebia'' *'' Hypsothemis'' *'' Junfengi'' *'' Jurassophlebia'' *'' Karatawia'' *'' Lateophlebia'' *'' Melanohypsa'' *'' Olonkia'' *'' Oreophlebia'' *'' Oshinia'' *'' Parabrunetia'' *'' Parafleckium'' *'' Parasinitsia'' *'' Parazygokaratawia'' *'' Petrophlebia'' *'' Pritykinia'' *'' Pternopteron'' *'' Qibinlina'' *'' Sagulia'' *'' Sarytashia'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insect
Insects (from Latin ') are Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (Insect morphology#Head, head, Thorax (insect anatomy), thorax and abdomen (insect anatomy), abdomen), three pairs of jointed Arthropod leg, legs, compound eyes, and a pair of antenna (biology), antennae. Insects are the most diverse group of animals, with more than a million described species; they represent more than half of all animal species. The insect nervous system consists of a insect brain, brain and a ventral nerve cord. Most insects reproduce Oviparous, by laying eggs. Insects Respiratory system of insects, breathe air through a system of Spiracle (arthropods), paired openings along their sides, connected to Trachea#Invertebrates, small tubes that take air directly to the tissues. The blood therefore does not carry oxygen; it is only partly contained in ves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dicraeosauridae
Dicraeosauridae is a Family (biology), family of Diplodocoidea, diplodocoid sauropods who are the sister group to Diplodocidae. Dicraeosaurids are a part of the Flagellicaudata, along with Diplodocidae. Dicraeosauridae includes genera such as ''Amargasaurus'', ''Suuwassea'', ''Dicraeosaurus'', and ''Brachytrachelopan''. Specimens of this family have been found in North America, Asia, Africa, and South America. In 2023, a dicraeosaurid fossil was discovered in India for the first time. Their temporal range is from the Early Jurassic, Early or Middle Jurassic to the Early Cretaceous. Few dicraeosaurids survived into the Cretaceous, the youngest of which was ''Amargasaurus''. The group was first described by German paleontologist Werner Janensch in 1914 with the discovery of ''Dicraeosaurus'' in Tanzania. Dicraeosauridae are distinct from other sauropods because of their relatively short neck size and small body size. The clade is monophyletic and well-supported phylogenetically wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sauropoda
Sauropoda (), whose members are known as sauropods (; from ''wikt:sauro-, sauro-'' + ''wikt:-pod, -pod'', 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative to the rest of their body), and four thick, pillar-like legs. They are notable for the enormous sizes attained by some species, and the group includes the largest animals to have ever lived on land. Well-known genus, genera include ''Apatosaurus'', ''Argentinosaurus'', ''Alamosaurus'', ''Brachiosaurus'', ''Camarasaurus'', ''Diplodocus,'' and ''Mamenchisaurus''. The oldest known unequivocal sauropod dinosaurs are known from the Early Jurassic. ''Isanosaurus'' and ''Antetonitrus'' were originally described as Triassic sauropods, but their age, and in the case of ''Antetonitrus'' also its sauropod status, were subsequently questioned. Sauropod-like sauropodomorph tracks from the Fleming Fjord Formation (Greenland) might, however, indicate the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
