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Callograptus
''Callograptus'' is a genus of graptolites. References * Two species of the genus Callograptus Hall, 1865 (Graptolithina, Dendroidea) from the Lower Ordovician of Bohemia. Kraft J, Bulletin of Geosciences, volume 74, issue 1, pages 21–26 External links * * ''Callograptus elegans'' at biolib.cz Graptolite genera Dendroidea Paleozoic life of the Northwest Territories {{paleo-deuterostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Graptolite Genera
This list of graptolites is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be members of Graptolithina, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (''nomina dubia''), or were not formally published (''nomina nuda''), as well as junior synonyms of more established names, and genera that are no longer considered graptolites. The list below is based on the genera listed in Maletz (2014). Naming conventions and terminology Naming conventions and terminology follow the International Code of Zoological Nomenclature. Technical terms used include: * Junior synonym: A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the type specimens are later assigned to the same genus, the first to be published (in chronological order) is the senior synonym, and all othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrograptidae
Dendrograptidae is an extinct family of graptolites. Genera List of genera from Maletz (2014): *†''Airograptus'' Ruedemann, 1916 *†''Aspidograptus'' Bulman, 1934 *? †''Cactograptus'' Ruedemann, 1908 *†''Callograptus'' Hall, 1865 *†''Calyxdendrum'' Kozłowski, 1960 *†''Capillograptus'' Bouček, 1957 *†''Dendrograptus'' Hall, 1858 *†''Denticulograptus'' Schmidt, 1939 *†''Desmograptus'' Hopkinson in Hopkinson & Lapworth, 1875 *†''Dictyonema (graptolite), Dictyonema'' Hall, 1851 *†''Graptolodendrum'' Kozłowski, 1966 *†''Licnograptus'' Ruedemann, 1947 *†''Odontocaulis'' Lapworth, 1881 *†''Ophigraptus'' Jaeger, 1992 *†''Ophiograptus'' Poulsen, 1937 *†''Pseudocallograptus'' Skevington, 1963 *†''Pseudodictyonema'' Bouček, 1957 *†''Ptilograptus'' Hall, 1865 *†''Ptiograptus'' Ruedemann, 1908 *†''Rhabdinopora'' (†''Dictyograptus'') Paškevičius, 2011 *†''Rhizograpsus'' Spencer, 1878 *? †''Ruedemannograptus'' Termier & Termier, 1948 *†''Stel ... [...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] |
Pterobranchia
Pterobranchia is a class of small worm-shaped animals. They belong to the Hemichordata, and live in secreted tubes on the ocean floor. Pterobranchia feed by filtering plankton out of the water with the help of cilia attached to tentacles. There are about 25 known living pterobranch species in three genera, which are ''Rhabdopleura'', '' Cephalodiscus'', and '' Atubaria''. On the other hand, there are several hundred extinct genera, some of which date from the Cambrian Period. The class Pterobranchia was established by Ray Lankester in 1877. It contained, at that time, the single genus ''Rhabdopleura''. ''Rhabdopleura'' was at first regarded as an aberrant polyzoon, but when the ''Challenger'' report on '' Cephalodiscus'' was published in 1887, it became clear that ''Cephalodiscus'', the second genus now included in the order, had affinities with the Enteropneusta. Electron microscope studies have suggested that pterobranchs belong to the same clade as the extinct grapto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendroidea
Graptolites are a group of Colony (biology)#Modular organisms, colonial animals, members of the subclass Graptolithina within the class (biology), class Pterobranchia. These Filter feeder, filter-feeding organisms are known chiefly from fossils found from the Middle Cambrian (Miaolingian, Wuliuan) through the Lower Carboniferous (Mississippian (geology), Mississippian). A possible early graptolite, ''Chaunograptus'', is known from the Middle Cambrian. Recent analyses have favored the idea that the living pterobranch ''Rhabdopleura'' represents an extant graptolite which diverged from the rest of the group in the Cambrian. Fossil graptolites and ''Rhabdopleura'' share a colony structure of interconnected zooids housed in organic tubes (theca) which have a basic structure of stacked half-rings (fuselli). Most extinct graptolites belong to two major orders: the bush-like Sessility (motility), sessile Dendroidea and the Plankton, planktonic, free-floating Graptoloidea. These orders mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Hall (paleontologist)
James Hall Jr. (September 12, 1811 – August 7, 1898) was an American geologist and paleontologist. He was a noted authority on stratigraphy and had an influential role in the development of paleontology in the United States. Early life James Hall was born in Hingham, Massachusetts, the oldest of four children. His parents, James Hall Sr. and Sousanna Dourdain Hall, had emigrated from England two years earlier. Hall developed an early interest in science and enrolled in Rensselaer Polytechnic Institute, a recently established college that emphasized student participation and focused on science. He was a student of Amos Eaton and Ebenezer Emmons, both notable geologists. Hall graduated with honors in 1832, received his master's degree in 1833, and remained at Rensselaer to teach chemistry and later geology. In 1836 a multi-year survey was established to collect information on the geology and natural history of New York. For purposes of the survey, the state was divided into f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quebec Group
The Quebec Group is a geologic group in Quebec. It preserves fossils dating back to the Silurian period. See also * List of fossiliferous stratigraphic units in Quebec This is a list of fossiliferous stratigraphic units in Quebec, Canada. References * {{Lists of fossiliferous stratigraphic units in Canada Quebec Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accen ... References * * III.—On Palæosaccus Dawsoni, Hinde, a New Genus and Species of Hexactinellid Sponge from the Quebec Group (Ordovician) at Little Métis, Quebec, Canada. GJ Hinde - Geological Magazine (Decade III), 1893 - Cambridge Univ Press * Graptolites of the Quebec group. J Hall - 1865 Silurian Quebec Geologic groups of Quebec {{Quebec-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graptolite Genera
Graptolites are a group of colonial animals, members of the subclass Graptolithina within the class Pterobranchia. These filter-feeding organisms are known chiefly from fossils found from the Middle Cambrian (Miaolingian, Wuliuan) through the Lower Carboniferous ( Mississippian). A possible early graptolite, ''Chaunograptus'', is known from the Middle Cambrian. Recent analyses have favored the idea that the living pterobranch ''Rhabdopleura'' represents an extant graptolite which diverged from the rest of the group in the Cambrian. Fossil graptolites and ''Rhabdopleura'' share a colony structure of interconnected zooids housed in organic tubes (theca) which have a basic structure of stacked half-rings (fuselli). Most extinct graptolites belong to two major orders: the bush-like sessile Dendroidea and the planktonic, free-floating Graptoloidea. These orders most likely evolved from encrusting pterobranchs similar to ''Rhabdopleura''. Due to their widespread abundance, plantkonic l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
