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Jurodidae
Jurodidae is a family of beetles that was originally described for the extinct genus '' Jurodes'', known from the Middle-Late Jurassic of Asia. In 1996, a living species, ''Sikhotealinia zhiltzovae'' was discovered in the Sikhote-Alin mountains in Siberia, and assigned to this family. Their placement is uncertain, but are usually considered archostematans. In one study, ''Sikhotealinia'' and ''Jurodes'' were considered a sister group to all other archostematan beetles. However, other authors have considered them to mix characteristics of Archostemata, as well as Polyphaga and Adephaga. Subdivision * '' Jurodes'' Ponomarenko 1985 **''Jurodes ignoramus'' Ponomarenko, 1985 Ichetuy Formation, Russia, Late Jurassic ( Oxfordian) ** ''Jurodes minor'' Ponomarenko, 1990 Glushkovo Formation, Russia, Late Jurassic (Tithonian) ** ''Jurodes daohugouensis'' Dahougou, China, Middle Jurassic (Callovian In the geologic timescale, the Callovian is an age and stage in the Middle Jurassic, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sikhotealinia
''Sikhotealinia'' is a genus of beetle containing a single species, ''Sikhotealinia zhiltzovae'', which is the only living representative of the family Jurodidae. It was discovered in the Sikhote-Alin mountains in Outer Manchuria. This "living fossil" is unique in having three ocelli on their forehead, a condition otherwise unknown in the entire order Coleoptera, whether extinct or living - though it is common in other orders, and generally considered a groundplan character for neoptera Neoptera (Ancient Greek ''néos'' (“new”) + ''pterón'' (“wing”)) is a classification group that includes most orders of the winged insects, specifically those that can flex their wings over their abdomens. This is in contrast with the mo ...n insects. ''Sikhotealinia'' and its extinct relative ''Jurodes'' are considered as a sister group to all other archostematan beetles. References Further reading * External links IllustrationPhotos {{Taxonbar, from=Q18116001 Archostemata Mono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archostemata
The Archostemata are the smallest suborder of beetles, consisting 45 living species in five families. They are an ancient lineage with a number of primitive characteristics. Antennae may be thread-shaped (filiform) or like a string of beads (moniliform). This suborder also contains the only beetles where both sexes are paedogenic, ''Micromalthus debilis''. Modern archostematan beetles are considered rare, but were more diverse during the Mesozoic. The term "Archostemata" is used more broadly by some authors to include both modern archostematans as well as stem-group beetles like " protocoleopterans", which some modern archostematans closely resemble to due to their plesiomorphic morphology. Genetic research suggests that modern archostematans are a monophyletic group. Some genetic studies have recovered archostematans as the sister group of Myxophaga. Taxonomy There are five extant families. * Family Crowsoniellidae Iablokoff-Khnzorian, 1983 * Family Cupedidae Laporte, 1838 * F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archostemata
The Archostemata are the smallest suborder of beetles, consisting 45 living species in five families. They are an ancient lineage with a number of primitive characteristics. Antennae may be thread-shaped (filiform) or like a string of beads (moniliform). This suborder also contains the only beetles where both sexes are paedogenic, ''Micromalthus debilis''. Modern archostematan beetles are considered rare, but were more diverse during the Mesozoic. The term "Archostemata" is used more broadly by some authors to include both modern archostematans as well as stem-group beetles like " protocoleopterans", which some modern archostematans closely resemble to due to their plesiomorphic morphology. Genetic research suggests that modern archostematans are a monophyletic group. Some genetic studies have recovered archostematans as the sister group of Myxophaga. Taxonomy There are five extant families. * Family Crowsoniellidae Iablokoff-Khnzorian, 1983 * Family Cupedidae Laporte, 1838 * F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beetle
Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently, with estimates suggesting that there are between 0.9 and 2.1 million total species. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae (ladybirds or ladybugs) eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops. Beetles typically have a particularly hard e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sikhote-Alin
The Sikhote-Alin (russian: Сихотэ́-Али́нь, , , ) is a mountain range in Primorsky and Khabarovsk Krais, Russia, extending about to the northeast of the Russian Pacific seaport of Vladivostok. The highest summits are Tordoki Yani at above sea level, Ko Mountain () in Khabarovsk Krai and Anik Mountain () in Primorsky Krai. Geography Sikhote-Alin is a temperate zone, though species typical of northern taiga (such as reindeer and the Ussuri brown bear) coexist with the Amur tiger, Amur leopard, and Asiatic black bear. The region holds very few wolves, due to competition with tigers. The longest-lived tree in the region is a millennium-old Japanese yew. Many tributaries of the Amur River lie within the range, including the Gur. The core zone can only be explored in a company of rangers. History The name is thought to be of Manchu origin ( mnc, alin "mountain"). In the 1910s and 1920s, Sikhote-Alin was extensively explored by Russian geographer and naturalist Vladi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphaga
Polyphaga is the largest and most diverse suborder of beetles. It comprises 144 families in 16 superfamilies, and displays an enormous variety of specialization and adaptation, with over 350,000 described species, or approximately 90% of the beetle species so far discovered. Key characteristics of Polyphaga are that the hind coxa (base of the leg) does not divide the first and second abdominal/ventral plates which are known as sternites. Also, the notopleural suture (found under the pronotal shield) is not present. Etymology The name of ''polyphaga'' is derived from two Greek words: , meaning 'many', and , meaning 'to eat', so the suborder is called the “eaters of many things”. Classification The five main infraorders are: * Bostrichiformia — including furniture beetles and skin beetles * Cucujiformia — includes lady beetles, longhorn beetles, weevils, checkered beetles and leaf beetles * Elateriformia — includes click beetles and fireflies * Scarabaeiformia — ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adephaga
The Adephaga (from Greek ἀδηφάγος, ''adephagos'', "gluttonous") are a suborder of beetles, and with more than 40,000 recorded species in 10 families, the second-largest of the four beetle suborders. Members of this suborder are collectively known as adephagans. The largest family is Carabidae (ground beetles) which comprises most of the suborder with over 40,000 species. Adephaga also includes a variety of aquatic beetles, such as predaceous diving beetles and whirligig beetles. Anatomy Adephagans have simple antennae with no pectination or clubs. The galeae of the maxillae usually consist of two segments. Adult adephagans have visible notopleural sutures. The first visible abdominal sternum is completely separated by the hind coxae, which is one of the most easily recognizable traits of adephagans. Five segments are on each foot. Wings The transverse fold of the hind wing is near the wing tip. The median nervure ends at this fold, where it is joined by a cro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxfordian (stage)
The Oxfordian is, in the ICS' geologic timescale, the earliest age of the Late Jurassic Epoch, or the lowest stage of the Upper Jurassic Series. It spans the time between 163.5 ± 1.0 Ma and 157.3 ± 1.0 Ma (million years ago). The Oxfordian is preceded by the Callovian and is followed by the Kimmeridgian. Stratigraphic definitions The Oxfordian Stage was called "Clunch Clay and Shale" by William Smith (1815–1816); in 1818 W. Buckland described them under the unwieldy title "Oxford, Forest or Fen Clay". The term Oxfordian was introduced by Alcide d'Orbigny in 1844. The name is derived from the English city of Oxford, where the beds are well developed, but they crop out almost continuously from Dorset to the coast of Yorkshire, generally forming low, broad valleys. They are well exposed at Weymouth, Oxford, Bedford, Peterborough, and in the cliffs at Scarborough, Red Cliff and Gristhorpe Bay. Rocks of this age are found also in Uig and Skye. The base of the Oxfordian Stage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glushkovo Formation
Glushkovo (russian: Глушково) is the name of several inhabited localities in Russia. ;Urban localities *Glushkovo, Glushkovsky District, Kursk Oblast, a work settlement in Glushkovsky District of Kursk Oblast ;Rural localities * Glushkovo, Kaliningrad Oblast, a settlement in Kamensky Rural Okrug of Chernyakhovsky District of Kaliningrad Oblast * Glushkovo, Krasnoyarsk Krai, a village in Balakhtonsky Selsoviet of Kozulsky District of Krasnoyarsk Krai * Glushkovo, Kulbakinsky Selsoviet, Glushkovsky District, Kursk Oblast, a station settlement in Kulbakinsky Selsoviet of Glushkovsky District of Kursk Oblast * Glushkovo, Republic of Mordovia, a '' selo'' in Glushkovsky Selsoviet of Kadoshkinsky District of the Republic of Mordovia * Glushkovo, Nizhny Novgorod Oblast, a village in Bolsherudkinsky Selsoviet of Sharangsky District of Nizhny Novgorod Oblast * Glushkovo, Kholm-Zhirkovsky District, Smolensk Oblast, a village in Nakhimovskoye Rural Settlement of Kholm-Zhirkovsky D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tithonian
In the geological timescale, the Tithonian is the latest age of the Late Jurassic Epoch and the uppermost stage of the Upper Jurassic Series. It spans the time between 152.1 ± 4 Ma and 145.0 ± 4 Ma (million years ago). It is preceded by the Kimmeridgian and followed by the Berriasian (part of the Cretaceous).See for a detailed version of the geologic timescale Gradstein ''et al.'' (2004) Stratigraphic definitions The Tithonian was introduced in scientific literature by German stratigrapher Albert Oppel in 1865. The name Tithonian is unusual in geological stage names because it is derived from Greek mythology. Tithonus was the son of Laomedon of Troy and fell in love with Eos, the Greek goddess of dawn. His name was chosen by Albert Oppel for this stratigraphical stage because the Tithonian finds itself hand in hand with the dawn of the Cretaceous. The base of the Tithonian stage is at the base of the ammonite biozone of '' Hybonoticeras hybonotum''. A global reference profi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
