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Pauropoda
Pauropods are small, pale, millipede-like arthropods. Around 830 species in twelve families are found worldwide, living in soil and leaf mold. They look rather like centipedes, or millipedes, and may be a sister group of the latter. However, this is controversial, as a close relationship with Symphyla has also been posited. Anatomy and ecology Pauropods are soft, cylindrical animals with bodies long. They have neither eyes nor hearts, although they do have sensory organs which can detect light. The body segments have ventral tracheal/spiracular pouches forming apodemes similar to those in millipedes and Symphyla, although the trachea usually connected to these structures are absent in most species. There are long sensory hairs located throughout the body segments. Pauropods can usually be identified because of their distinctive anal plate, which is unique to pauropods. Different species of pauropods can be identified based on the size and shape of their anal plate. The antenn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexamerocerata
''Millotauropus'' is a genus of pauropods, comprising the monotypic family Millotauropodidae in the monotypic order Hexamerocerata. Eight species are known. Species of Hexamerocerata are characterized by a 12-segmented body, a 6-segmented antenna, and have at most 11 pairs of walking legs as adults. Additionally, Hexamerocerata possess tracheae on the bases of first pair of legs, features lacking in all other pauropods (those comprising the larger order Tetramerocerata Tetramerocerata is an order of pauropods containing 12 different families and about 480 different species. Tetrameroceratans have a 12 segmented body, 4 segmented antennae, 6 tergites, and 8 to10 legs pairs of legs as adults. Most pauropods in ...). The body is colored white, and individuals are usually larger than in Tetramerocerata. Hexamerocerata are found in the tropics of Brazil, continental Africa, Madagascar, and Seychelles, as well as Japan. References External links * Myriapod genera Monotypi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millotauropodidae
''Millotauropus'' is a genus of pauropods, comprising the monotypic family Millotauropodidae in the monotypic order Hexamerocerata. Eight species are known. Species of Hexamerocerata are characterized by a 12-segmented body, a 6-segmented antenna, and have at most 11 pairs of walking legs as adults. Additionally, Hexamerocerata possess tracheae on the bases of first pair of legs, features lacking in all other pauropods (those comprising the larger order Tetramerocerata Tetramerocerata is an order of pauropods containing 12 different families and about 480 different species. Tetrameroceratans have a 12 segmented body, 4 segmented antennae, 6 tergites, and 8 to10 legs pairs of legs as adults. Most pauropods in ...). The body is colored white, and individuals are usually larger than in Tetramerocerata. Hexamerocerata are found in the tropics of Brazil, continental Africa, Madagascar, and Seychelles, as well as Japan. References External links * Myriapod genera Monotypi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pauropodidae
Pauropodidae is a family of pauropods. It contains over 20 genera and 650 species, as well as the only known fossil pauropod, ''Eopauropus''. Like most adult pauropods in the order Tetramerocerata Tetramerocerata is an order of pauropods containing 12 different families and about 480 different species. Tetrameroceratans have a 12 segmented body, 4 segmented antennae, 6 tergites, and 8 to10 legs pairs of legs as adults. Most pauropods in ..., most adults in this family have 9 pairs of legs, but adults in one genus, ''Cauvetauropus'', have only 8 pairs of legs, and female adults in another genus, ''Decapauropus'', have either 9 or 10 pairs of legs. The first pauropod discovered with more than 9 pairs of legs was the species ''D. cuenoti'', first described with 10 pairs in 1931. Reference External links * Myriapod families Taxa named by John Lubbock, 1st Baron Avebury {{Myriapoda-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod
Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arthropod cuticle, cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate. The arthropod body plan consists of segments, each with a pair of appendages. Arthropods are bilaterally symmetrical and their body possesses an exoskeleton, external skeleton. In order to keep growing, they must go through stages of moulting, a process by which they shed their exoskeleton to reveal a new one. Some species have wings. They are an extremely diverse group, with up to 10 million species. The haemocoel, an arthropod's internal cavity, through which its haemolymph – analogue of blood – circulates, accommodates its interior Organ (anatomy), organs; it has an open circulatory system. Like their exteriors, the internal or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetramerocerata
Tetramerocerata is an order of pauropods containing 12 different families and about 480 different species. Tetrameroceratans have a 12 segmented body, 4 segmented antennae, 6 tergites, and 8 to10 legs pairs of legs as adults. Most pauropods in this order have 9 leg pairs as adults, but four genera (''Cauvetauropus'', ''Aletopauropus'', ''Zygopauropus'', and ''Amphipauropus'') have only 8 pairs, and adult females in the genus ''Decapauropus'' (in the Pauropodidae Pauropodidae is a family of pauropods. It contains over 20 genera and 650 species, as well as the only known fossil pauropod, '' Eopauropus''. Like most adult pauropods in the order Tetramerocerata Tetramerocerata is an order Order, ORDER or ... family) have either nine or ten pairs of legs. Pauropods in this order are generally 0.5 mm to 2 mm long, and are usually white or brown. Tetramerocerata has a subcosmopolitan distribution, occurring nearly worldwide. References External links * Myriapod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millipede
Millipedes are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class Diplopoda, the name derived from this feature. Each double-legged segment is a result of two single segments fused together. Most millipedes have very elongated cylindrical or flattened bodies with more than 20 segments, while pill millipedes are shorter and can roll into a tight ball. Although the name "millipede" derives from the Latin for "thousand feet", no species was known to have 1,000 or more until the discovery of ''Eumillipes persephone'', which can have over 1,300 legs. There are approximately 12,000 named species classified into 16 orders and around 140 families, making Diplopoda the largest class of myriapods, an arthropod group which also includes centipedes and other multi-legged creatures. Most millipedes are slow-moving detritivores, eating decaying leaves and other dead plant matter. Some eat fungi or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eopauropus Balticus
''Eopauropus balticus'' is a prehistoric pauropod known from mid-Eocene Baltic amber. It is the only known pauropod in the fossil record. As pauropods are normally soil-dwelling, their presence in amber Amber is fossilized tree resin that has been appreciated for its color and natural beauty since Neolithic times. Much valued from antiquity to the present as a gemstone, amber is made into a variety of decorative objects."Amber" (2004). In Ma ... (fossilized tree sap) is unusual, and they are the rarest known animals in Baltic amber. References Prehistoric myriapods Baltic amber Fossil taxa described in 2001 {{paleo-myriapod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millipede
Millipedes are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class Diplopoda, the name derived from this feature. Each double-legged segment is a result of two single segments fused together. Most millipedes have very elongated cylindrical or flattened bodies with more than 20 segments, while pill millipedes are shorter and can roll into a tight ball. Although the name "millipede" derives from the Latin for "thousand feet", no species was known to have 1,000 or more until the discovery of ''Eumillipes persephone'', which can have over 1,300 legs. There are approximately 12,000 named species classified into 16 orders and around 140 families, making Diplopoda the largest class of myriapods, an arthropod group which also includes centipedes and other multi-legged creatures. Most millipedes are slow-moving detritivores, eating decaying leaves and other dead plant matter. Some eat fungi or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurypauropod
Eurypauropodidae is a family of pauropods. The family was first described by the American zoologist John A. Ryder during October 1873. Eurypauropodids are generally less than 1 millimeter long, and their outer plates are usually completely sclerotised Sclerotin is a component of the cuticle of various Arthropoda, most familiarly insects. It is formed by cross-linking members of particular classes of protein molecules, a biochemical process called sclerotization, a form of tanning in which qui .... References External links * Myriapod families {{Myriapoda-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmopolitan Distribution
In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The extreme opposite of a cosmopolitan species is an endemic one, being found only in a single geographical location. Qualification The caveat “in appropriate habitat” is used to qualify the term "cosmopolitan distribution", excluding in most instances polar regions, extreme altitudes, oceans, deserts, or small, isolated islands. For example, the housefly is highly cosmopolitan, yet is neither oceanic nor polar in its distribution. Related terms and concepts The term pandemism also is in use, but not all authors are consistent in the sense in which they use the term; some speak of pandemism mainly in referring to diseases and pandemics, and some as a term intermediate between endemism and cosmopolitanism, in effect regarding pandemism as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Lubbock, 1st Baron Avebury
John Lubbock, 1st Baron Avebury, 4th Baronet, (30 April 183428 May 1913), known as Sir John Lubbock, 4th Baronet from 1865 until 1900, was an English banker, Liberal politician, philanthropist, scientist and polymath. Lubbock worked in his family company as a banker but made significant contributions in archaeology, ethnography, and several branches of biology. He coined the terms "Paleolithic" and "Neolithic" to denote the Old and New Stone Ages, respectively. He helped establish archaeology as a scientific discipline, and was influential in debates concerning evolutionary theory. He introduced the first law for the protection of the UK's archaeological and architectural heritage. He was also a founding member of the X Club. Early life John Lubbock was born in 1834, the son of Sir John Lubbock, 3rd Baronet, a London banker, and was brought up in the family home of High Elms Estate, near Downe in Kent. The family had two homes, one at 29 Eaton Place, Belgrave Square where Jo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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