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Histiodella Kristinae
''Histiodella'' is an extinct genus of conodonts. ''Histiodella wuhaiensis'' is from the Ordovician of the Lower Klimoli Formation in China.Ordovician conodonts from Dashimen, Wuhai in Inner Mongolia and the significance of the discovery of the Histiodella fauna. Zhihao Wang, Stig Bergström, Yongyi Zhen, Yuandong Zhang; Rongchang Wu and Qing Chen, Acta Micropalaeontologica Sinica, 2013, volume 30, issue 4, pages 323–343 ''Histiodella kristinae'' forms a conodont zone, in the Table Cove Formation, Table Point, "Middle Table Head" and Table Cove, in the Middle Ordovician of Newfoundland, Canada where the trilobite species ''Lonchodomas clavulus'' or ''Galbagnostus galba'' are also present. Use in stratigraphy The base of the Darriwilian The Darriwilian is the upper stage of the Middle Ordovician. It is preceded by the Dapingian and succeeded by the Upper Ordovician Sandbian Stage. The lower boundary of the Darriwilian is defined as the first appearance of the graptolite spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chordata
A chordate () is an animal of the phylum Chordata (). All chordates possess, at some point during their larval or adult stages, five synapomorphies, or primary physical characteristics, that distinguish them from all the other taxa. These five synapomorphies include a notochord, dorsal hollow nerve cord, endostyle or thyroid, pharyngeal slits, and a post-anal tail. The name “chordate” comes from the first of these synapomorphies, the notochord, which plays a significant role in chordate structure and movement. Chordates are also Bilateral symmetry, bilaterally symmetric, have a coelom, possess a circulatory system, and exhibit Metameric, metameric segmentation. In addition to the morphological characteristics used to define chordates, analysis of genome sequences has identified two conserved signature indels (CSIs) in their proteins: cyclophilin-like protein and mitochondrial inner membrane protease ATP23, which are exclusively shared by all vertebrates, tunicates and cep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conodont
Conodonts (Greek ''kōnos'', "cone", + ''odont'', "tooth") are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which are usually found in isolation and are now called conodont elements. Knowledge about soft tissues remains limited. They existed in the world's oceans for over 300 million years, from the Cambrian to the beginning of the Jurassic. Conodont elements are widely used as index fossils, fossils used to define and identify geological periods. The animals are also called Conodontophora (conodont bearers) to avoid ambiguity. Discovery and understanding of conodonts The teeth-like fossils of the conodont were first discovered by Heinz Christian Pander and the results published in Saint Petersburg, Russia, in 1856. The name ''pander'' is commonly used in scientific names of conodonts. It was only in the early 1980s that the first fossil evidence of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RW Harris
RW or rw may refer to: In arts and entertainment * ''The Real World'' (TV series), an American reality television show * ''Road Wild'', a World Championship Wrestling pay-per-view event * Robbie Williams, a British pop star * Robin Williams, an American actor * Roger Waters, British musician * Robot Wars (other) In mathematics, science and technology In computing * Read-write access to files or directories, in file system permissions * Read-write memory * Rewritable media * RenderWare, a 3-D rendering engine produced by Criterion Software Other uses in mathematics, science, and technology * Random walk, a mathematical process that can be used to explain phenomena in several disciplines * Reaction wheel, a type of flywheel used primarily by spacecraft for attitude control * Robertson–Walker metric, in cosmology * Robin Wight, botanist, noted as R.W. * RW is the designation for the 15th variable star named in a constellation: ** RW Andromedae, a Mira variable locat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1962 In Paleontology
Paleozoology Conodont paleozoology German paleontologist Klaus J. Müller (1923-2010) described the conodont order Paraconodontida.Supplement to systematics of conodonts. KJ Müller and RC Moore, in Treatise on invertebrate paleontology The ''Treatise on Invertebrate Paleontology'' (or ''TIP'') published by the Geological Society of America and the University of Kansas Press, is a definitive multi-authored work of some 50 volumes, written by more than 300 paleontologists, and co ..., Part W: Miscellanea : Conodonts Conoidal Shells of Uncertain Affinities, Worms, Trace Fossils, and Problema, 1962 - Geological Society of America Vertebrates Dinosaurs Newly named dinosaurs Data courtesy of George Olshevsky's dinosaur genera list. Birds Newly named birds References {{portal, Paleontology 1960s in paleontology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conodont
Conodonts (Greek ''kōnos'', "cone", + ''odont'', "tooth") are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which are usually found in isolation and are now called conodont elements. Knowledge about soft tissues remains limited. They existed in the world's oceans for over 300 million years, from the Cambrian to the beginning of the Jurassic. Conodont elements are widely used as index fossils, fossils used to define and identify geological periods. The animals are also called Conodontophora (conodont bearers) to avoid ambiguity. Discovery and understanding of conodonts The teeth-like fossils of the conodont were first discovered by Heinz Christian Pander and the results published in Saint Petersburg, Russia, in 1856. The name ''pander'' is commonly used in scientific names of conodonts. It was only in the early 1980s that the first fossil evidence of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Klimoli Formation
{{Disambiguation ...
Lower may refer to: * Lower (surname) * Lower Township, New Jersey *Lower Receiver (firearms) * Lower Wick Gloucestershire, England See also *Nizhny Nizhny (russian: Ни́жний; masculine), Nizhnyaya (; feminine), or Nizhneye (russian: Ни́жнее; neuter), literally meaning "lower", is the name of several Russian localities. It may refer to: * Nizhny Novgorod, a Russian city colloquial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Table Cove Formation
The Table Cove Formation is a geologic formation in Newfoundland and Labrador. It preserves fossils dating back to the Ordovician period. See also * List of fossiliferous stratigraphic units in Newfoundland and Labrador This is a list of fossiliferous stratigraphic units in Newfoundland and Labrador. References * {{Lists of fossiliferous stratigraphic units in Canada Fossiliferous stratigraphic units of Canada, Newfoundland and Labrador Geology of Newf ... References * Ordovician Newfoundland and Labrador Ordovician southern paleotemperate deposits {{Newfoundland-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lonchodomas Clavulus
''Lonchodomas'' is a genus of trilobites, that lived during the Ordovician. It was eyeless, like all raphiophorids, and had a long straight sword-like frontal spine, that gradually transforms into the relatively long glabella. Both the glabellar spine and the backward directed genal spines are subquadrate in section. ''Lonchodomas'' has five thorax segments and the pleural area of the pygidium has two narrow furrows. ''Lonchodomas'' occurred in what are today Argentina, Canada (Newfoundland), Estonia, Latvia, Norway, Sweden, the Russian Federation (Leningrad OblastA.V. Krylov (2003).New data on trilobites from Hecker mud mounds (Ordovician) in the Leningrad region (in Russian). ''Vestnik Sankt-Petersburgskogo Universiteta, Seriya Geologiya i Geografiya'' 3(33):95-96) and the United States (Oklahoma, Virginia). Distribution * ''L. carinatus'' is found in the Upper Ordovician of the United States (Lower Member and Botetourt limestone Member, of the Edinburgh Formation, Shena ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galbagnostus Galba
''Galbagnostus'' is an extinct genus of agnostid trilobite. It lived during the Lower and Middle Ordovician (Floian to Darriwillian). Distribution * ''G. galba'' has been found in the Middle Ordovician (Darriwillian) of Newfoundland, Canada ('' Histiodella kristinae'' conodont-zone, Table Cove Formation, Table Head Group, Chazyan) and Ireland ( Lough Shee Mudrocks Formation, Llanvirn). * ''G. sp.'' was collected from the Horn Valley Siltstone and basal Stairway Sandstone, Amadeus Basin, Northern Territory. * ''G. nericiensis'' is reported from the late Lower Ordovician (Floian) of Sweden (Billingen stage). Description Like all Agnostida, ''G. galba'' is diminutive and the headshield (or cephalon) and tailshield (or pygidium) are of approximately the same size (or isopygous) and outline. As in all Agnostina, ''G. galba'' has two thorax The thorax or chest is a part of the anatomy of humans, mammals, and other tetrapod animals located between the neck and the abdomen. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darriwilian
The Darriwilian is the upper stage of the Middle Ordovician. It is preceded by the Dapingian and succeeded by the Upper Ordovician Sandbian Stage. The lower boundary of the Darriwilian is defined as the first appearance of the graptolite species ''Undulograptus austrodentatus'' around million years ago. It lasted for about 8.9 million years until the beginning of the Sandbian around million years ago. This stage of the Ordovician was marked by the beginning of the Andean-Saharan glaciation. Naming The name Darriwilian is derived from Darriwil, a parish in County of Grant, Victoria (Australia). The name was proposed in 1899 by Thomas Sergeant Hall. GSSP The GSSP of the Darriwilian is the Huangnitang Section () near the village Huangnitang, 3.5 km southwest of Changshan County Town (Zhejiang, China). It is an outcrop of the Ningkuo Formation, consisting of mainly black shale. The lower boundary of the Darriwilian is defined as the first appearance datum of the graptolite s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conodont Genera
This is a list of conodonts genera, sorted in alphabetical order. A-C * †'' Acanthodus'' * †''Acodus'' * †'' Acuminatella'' * †'' Alternognathus'' * †'' Amorphognathus'' * †''Ancyrodella'' * †''Ancyrognathus'' * †'' Anticostiodus'' * †''Appalachignathus'' * †'' Arianagnathus'' * †'' Bactrognathus'' * †'' Baltoniodus'' * †'' Basselodus'' * †'' Belodina'' * †'' Budurovignathus'' * †''Carnepigondolella'' * †''Carniodus'' * †''Cavusgnathus'' * †''Chiosella'' * †'' Chirodella'' * †'' Chirognathus'' * †''Colaptoconus'' * †'' Complexodus'' * †''Cordylodus'' * †''Cornuodus'' * †''Clarkina'' * †''Clydagnathus'' * †''Cryptotaxis'' * †''Ctenognathodus'' * †''Culumbodina'' * †'' Curtognathus'' * †'' Cypridodella'' D-E * †'' Dapsilodus'' * †'' Declinognathodus'' * †'' Decoriconus'' * †'' Diaphorodus'' * †'' Diplognathodus'' * †'' Distomodus'' * †'' Doliognathus'' * †'' Dollymae'' * †'' Drepanodus'' * †'' Eo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
