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Crussolum
''Crussolum'' is a genus of Silurian and Devonian centipedes from the US and Britain. It is the oldest known centipede. Description ''Crussolum'' contains one species, ''C. crusserratum'' known from the Panther Mountain Formation. Fossils from the Rhynie chert and Ludford Corner are identifiable to the genus, but are too poorly preserved to place as anything more than ''Crussolum spp.'', although they likely represent new taxa, and may not even be within this genus. The genus is only known from legs, alongside a maxilliped and antennae. These legs closely resemble those of scutigeromorph centipedes, hence its placement in this group. While they resemble those of ''Scutigera ''Scutigera'' is a centipede genus in the scutigeromorph (house centipede) family Scutigeridae, a group of centipedes with long limbs and true compound eyes (which were once thought to be secondary, re-evolved "pseudofacetted eyes"). It is co ...'' relatively closely, their femur and tarsus are mu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhynie Chert
The Rhynie chert is a Lower Devonian Sedimentary rock, sedimentary deposit exhibiting extraordinary fossil detail or completeness (a Lagerstätte). It is exposed near the village of Rhynie, Aberdeenshire, Scotland; a second unit, the Windyfield chert, is located some 700 m away. The Rhynie chert contains exceptionally preserved plant, fungus, lichen and animal material preserved in place by an overlying Volcanic rock, volcanic deposit. The bulk of the Devonian fossil bed consists of primitive plants (which had xylem, water-conducting cells and spores, sporangia, but no true leaf, leaves), along with arthropods, lichens, algae and fungi. This fossil bed is remarkable for two reasons. First, the age of the site (Pragian, Early Devonian, formed about ) places it at an early stage in the colonisation of land. Second, these cherts are famous for their exceptional state of ultrastructure, ultrastructural preservation, with individual cell walls easily visible in polished specimen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panther Mountain Formation
The Panther Mountain Formation is a Formation (stratigraphy), geologic formation in New York (state), New York. It preserves fossils dating back to the Devonian Period (geology), period. It is located in the counties of Albany County, New York, Albany, Madison County, New York, Madison, Oneida County, New York, Oneida, Otsego County, New York, Otsego, and Schoharie County, New York, Schoharie. It is well known for its fossil arthropods preserved as flattened cuticles, including ''Attercopus'' and ''Dracochela''. Paleobiota Arachnids Myriapods Insects Eye fragments of supposed archaeognathan affinities, and scales of possible archaeognathan or zygentoman affinities are known. Flora See also * Gilboa Fossil Forest, forest existed in Givetian of New York * List of fossiliferous stratigraphic units in New York References Devonian geology of New York (state) Devonian System of North America Givetian Stage Devonian southern paleotemperate deposits Shale fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silurian
The Silurian ( ) is a geologic period and system spanning 23.5 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the third and shortest period of the Paleozoic Era, and the third of twelve periods of the Phanerozoic Eon. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by a few million years. The base of the Silurian is set at a series of major Ordovician–Silurian extinction events when up to 60% of marine genera were wiped out. One important event in this period was the initial establishment of terrestrial life in what is known as the Silurian-Devonian Terrestrial Revolution: vascular plants emerged from more primitive land plants, dikaryan fungi started expanding and diversifying along with glomeromycotan fungi, and three groups of arthropods ( myriapods, arachnids and hexapods) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devonian
The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian period at million years ago (Megaannum, Ma), to the beginning of the succeeding Carboniferous period at Ma. It is the fourth period of both the Paleozoic and the Phanerozoic. It is named after Devon, South West England, where rocks from this period were first studied. The first significant evolutionary radiation of history of life#Colonization of land, life on land occurred during the Devonian, as free-spore, sporing land plants (pteridophytes) began to spread across dry land, forming extensive coal forests which covered the continents. By the middle of the Devonian, several groups of vascular plants had evolved leaf, leaves and true roots, and by the end of the period the first seed-bearing plants (Pteridospermatophyta, pteridospermatophyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludford Corner (b. 1860), an English businessman and cricketer
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Ludford may refer to: Places England * Ludford, Lincolnshire, a village and parish in Lincolnshire ** RAF Ludford Magna, a former Royal Air Force base in Lincolnshire *Ludford, Shropshire, a village and parish in Shropshire (formerly in Herefordshire) People Surname * Sarah Ludford, Baroness Ludford (b. 1951), a British politician *Nicholas Ludford, English Renaissance composer * Simon Ludford, English physician First name *Ludford Docker Ludford Charles Docker (26 November 1860 – 1 August 1940) was a businessman and an English cricketer. He played first-class cricket for Derbyshire County Cricket Club, Derbyshire between 1881 and 1886, captaining the side in 1884, and for War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxilliped
An appendage (or outgrowth) is an external body part or natural prolongation that protrudes from an organism's body such as an arm or a leg. Protrusions from single-celled bacteria and archaea are known as cell-surface appendages or surface appendages. In many kinds of eukaryotic cells, the protrusions are known as membrane protrusions or cell appendages (examples include microvilli and cilia). Types in animals In arthropods, an appendage refers to any of the homologous body parts that may extend from a body segment, including antennae, mouthparts (including mandibles, maxillae and maxillipeds), gills, locomotor legs ( pereiopods for walking, and pleopods for swimming), sexual organs (gonopods), and parts of the tail (uropods). Typically, each body segment carries one pair of appendages. An appendage which is modified to assist in feeding is known as a maxilliped or gnathopod. In annelids lateral protrusions from the body are called parapodia. In echinoderms an app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scutigeromorph
Scutigeromorpha is an order of centipedes also known as house centipedes. These centipedes are found in the temperate and tropical parts of every continent except Antarctica, with their distribution significantly expanded by the introduction of the Mediterranean species ''Scutigera coleoptrata'' throughout Europe, Asia, and North America. The common species ''S. coleoptrata'' is a typical representative of this order, lying in wait for other arthropods, then seizing prey using great speed, and all species in this order reflect adaptations for this mode of life. Description House centipedes are hemianamorphic, and adults in this order have 15 leg-bearing segments. Adults have bodies that measure 2 to 3.5 cm in length, but some can reach 8 cm in body length. Species in this order can be readily recognized by their long legs and antennae. The antennae end in annulated flagella that are each divided into two or three segments. The ultimate legs are much longer than the others and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scutigera
''Scutigera'' is a centipede genus in the scutigeromorph (house centipede) family Scutigeridae, a group of centipedes with long limbs and true compound eyes (which were once thought to be secondary, re-evolved "pseudofacetted eyes"). It is composed of more than 30 species, including the most common and well-studied species, '' Scutigera coleoptrata.'' Species Extant species * '' Scutigera aethiopica'' * '' Scutigera argentina'' * '' Scutigera asiatica'' * '' Scutigera buda'' * '' Scutigera carrizala'' * '' Scutigera chichivaca'' * '' Scutigera coleoptrata'' * '' Scutigera complanata'' * '' Scutigera dubia'' * '' Scutigera fissiloba'' * '' Scutigera flavistoma'' * '' Scutigera hispida'' * '' Scutigera linceci'' * '' Scutigera longitarsis'' * '' Scutigera marmorea'' * '' Scutigera melanostoma'' * '' Scutigera nossibei'' * '' Scutigera oweni'' * '' Scutigera oxypyga'' * '' Scutigera parcespinosa'' * '' Scutigera planiceps'' * '' Scutigera poicila'' * '' Scutigera rubrilineat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod Tarsus
The arthropod leg is a form of jointed appendage of arthropods, usually used for walking. Many of the terms used for arthropod leg segments (called podomeres) are of Latin origin, and may be confused with terms for bones: ''coxa'' (meaning hip, : ''coxae''), ''trochanter'', ''femur'' (: ''femora''), ''tibia'' (: ''tibiae''), ''tarsus'' (: ''tarsi''), ''ischium'' (: ''ischia''), ''metatarsus'', ''carpus'', ''dactylus'' (meaning finger), ''patella'' (: ''patellae''). Homologies of leg segments between groups are difficult to prove and are the source of much argument. Some authors posit up to eleven segments per leg for the most recent common ancestor of extant arthropods but modern arthropods have eight or fewer. It has been argued that the ancestral leg need not have been so complex, and that other events, such as successive loss of function of a ''Hox''-gene, could result in parallel gains of leg segments. In arthropods, each of the leg segments articulates with the next segmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil Taxa Described In 1998
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''. Though the fossil record is incomplete, numerous studies have demonstrated that there is enough information available to give a good understanding of the pattern of diversification of life on Earth. In addition, the record can predict and fill gaps such as the discovery of ''Tiktaalik'' in the arctic of Canada. Paleontology includes the study of fossils: their age, method of formation, and evolutionary significance. Specimens are sometimes considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years to 4.1 billion years old. Early edition, published online before print. The ob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Devonian Myriapods
The Devonian ( ) is a geologic period The geologic time scale or geological time scale (GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronolo ... and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian period at million years ago (Megaannum, Ma), to the beginning of the succeeding Carboniferous period at Ma. It is the fourth period of both the Paleozoic and the Phanerozoic. It is named after Devon, South West England, where rocks from this period were first studied. The first significant evolutionary radiation of history of life#Colonization of land, life on land occurred during the Devonian, as free-spore, sporing land plants (pteridophytes) began to spread across dry land, forming extensive coal forests w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scutigeromorpha
Scutigeromorpha is an order of Centipede, centipedes also known as house centipedes. These centipedes are found in the temperate and tropical parts of every continent except Antarctica, with their distribution significantly expanded by the introduction of the Mediterranean species ''Scutigera coleoptrata'' throughout Europe, Asia, and North America. The common species ''S. coleoptrata'' is a typical representative of this order, lying in wait for other arthropods, then seizing prey using great speed, and all species in this order reflect adaptations for this mode of life. Description House centipedes are Anamorphic development, hemianamorphic, and adults in this order have 15 leg-bearing segments. Adults have bodies that measure 2 to 3.5 cm in length, but some can reach 8 cm in body length. Species in this order can be readily recognized by their long legs and Antenna (biology), antennae. The antennae end in annulated flagella that are each divided into two or three segments. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
