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Leuconia Dura
''Leuconia'' is a genus of calcareous sponges in the Family (biology), family Baeriidae. It was described by English anatomist and zoologist Robert Edmond Grant in 1833.Grant, R. E. (1833). Lectures on Comparative Anatomy and Animal Physiology. Lecture IV. On the classification of the organs of animals, and on the organs of support in animalcules and poripherous animals. ''The Lancet'', 1(531), 193–200. Species The following species of ''Leuconia'' are accepted in the World Porifera database: *''Leuconia alaskensis'' de Laubenfels, 1953de Laubenfels, M. W. (1953). Sponges of the Alaskan Arctic. ''Smithsonian Miscellaneous Publications'', 121(6), 1–22. *''Leuconia dura'' (Hozawa, 1929)Hozawa, S. (1929). Studies on the calcareous sponges of Japan. ''Journal of the Faculty of Scinece, Imperial University of Tokyo, Zoology'', 1, 277–389. *''Leuconia gladiator'' (Dendy, 1893)Dendy. A. (1892). Synopsis of the Australian Calcarea Heterocœla; with a proposed classification of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcareous Sponge
The calcareous sponges of class Calcarea are members of the animal phylum Porifera, the cellular sponges. They are characterized by spicules made of calcium carbonate in the form of calcite or aragonite. While the spicules in most species have three points, in some species they have either two or four points. Biology All sponges in this class are strictly marine, and, while they are distributed worldwide, most are found in shallow tropical waters. Like nearly all other sponges, they are sedentary filter feeders. All three sponge body plans are represented within class Calcarea : asconoid, syconoid, and leuconoid. Typically, calcareous sponges are small, measuring less than in height, and drab in colour. However, a few brightly coloured species are also known. Calcareous sponges vary from radially symmetrical vase-shaped body types to colonies made up of a meshwork of thin tubes, or irregular massive forms. The skeleton has either a mesh or honeycomb structure. Classifica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baeriidae
Baeriidae is a family of calcareous sponges in the class Calcarea. It was named by Borojevic, Boury-Esnault, and Vacelet in 2000.Borojevic, R., Boury-Esnault, N. & Vacelet, J. (2000). A revision of the supraspecific classification of the subclass Calcaronea (Porifera, class Calcarea). ''Zoosystema'', 22(2), 203–263. The type genus is ''Baeria'' Miklucho-Maclay, 1870, by original designation, though ''Baeria'' is now considered a junior synonym A synonym is a word, morpheme, or phrase that means exactly or nearly the same as another word, morpheme, or phrase in a given language. For example, in the English language, the words ''begin'', ''start'', ''commence'', and ''initiate'' are all ... of '' Leuconia'' Grant, 1833. Genera The following genera are in the family Baeriidae: *'' Eilhardia'' Poléjaeff, 1883Poléjaeff, N. (1883). Report on the Calcarea dredged by H. M. S. ''Challenger'' during the years 1873–1876. In Thomson, C. & Murray, J. (Eds.), ''Report of the Scienti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anatomist
Anatomy () is the branch of biology concerned with the study of the structure of organisms and their parts. Anatomy is a branch of natural science that deals with the structural organization of living things. It is an old science, having its beginnings in prehistoric times. Anatomy is inherently tied to developmental biology, embryology, comparative anatomy, evolutionary biology, and phylogeny, as these are the processes by which anatomy is generated, both over immediate and long-term timescales. Anatomy and physiology, which study the structure and function of organisms and their parts respectively, make a natural pair of related disciplines, and are often studied together. Human anatomy is one of the essential basic sciences that are applied in medicine. The discipline of anatomy is divided into macroscopic and microscopic. Macroscopic anatomy, or gross anatomy, is the examination of an animal's body parts using unaided eyesight. Gross anatomy also includes the branch of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoologist
Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological classification, classification, Ethology, habits, and distribution of all animals, both living and extinction, extinct, and how they interact with their ecosystems. The term is derived from Ancient Greek , ('animal'), and , ('knowledge', 'study'). Although humans have always been interested in the natural history of the animals they saw around them, and made use of this knowledge to domesticate certain species, the formal study of zoology can be said to have originated with Aristotle. He viewed animals as living organisms, studied their structure and development, and considered their adaptations to their surroundings and the function of their parts. The Greek physician Galen studied human anatomy and was one of the greatest surgeons of the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Edmond Grant
Robert Edmond Grant Doctor of Medicine, MD Royal College of Physicians of Edinburgh, FRCPEd Fellow of the Royal Society, FRS FRSE Zoological Society of London, FZS Geological Society of London, FGS (11 November 1793 – 23 August 1874) was a British anatomist and zoologist. Life Grant was born at Argyll Square in Edinburgh (demolished to create Chambers Street), the son of Alexander Grant WS, and his wife, Jane Edmond. He was educated at the High School in Edinburgh then studied Medicine at Edinburgh University. Having obtained his MD at Edinburgh in 1814, Grant gave up medical practice in favour of marine biology and the zoology of invertebrates, living on a legacy from his father. As a materialist and Freethought, freethinker, and politically Radicalism (historical), radical, he was open to ideas in biology that were considered subversive in the climate of opinion prevailing in Britain after the Napoleonic Wars. He cited Erasmus Darwin's ''Zoönomia'' in his doctoral dissertat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuconia Alaskensis
''Leuconia'' is a genus of calcareous sponges in the family Baeriidae. It was described by English anatomist and zoologist Robert Edmond Grant in 1833.Grant, R. E. (1833). Lectures on Comparative Anatomy and Animal Physiology. Lecture IV. On the classification of the organs of animals, and on the organs of support in animalcules and poripherous animals. ''The Lancet'', 1(531), 193–200. Species The following species of ''Leuconia'' are accepted in the World Porifera database: *'' Leuconia alaskensis'' de Laubenfels, 1953de Laubenfels, M. W. (1953). Sponges of the Alaskan Arctic. ''Smithsonian Miscellaneous Publications'', 121(6), 1–22. *''Leuconia dura ''Leuconia'' is a genus of calcareous sponges in the Family (biology), family Baeriidae. It was described by English anatomist and zoologist Robert Edmond Grant in 1833.Grant, R. E. (1833). Lectures on Comparative Anatomy and Animal Physiology. ...'' (Hozawa, 1929)Hozawa, S. (1929). Studies on the calcareous sponges of Ja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuconia Dura
''Leuconia'' is a genus of calcareous sponges in the Family (biology), family Baeriidae. It was described by English anatomist and zoologist Robert Edmond Grant in 1833.Grant, R. E. (1833). Lectures on Comparative Anatomy and Animal Physiology. Lecture IV. On the classification of the organs of animals, and on the organs of support in animalcules and poripherous animals. ''The Lancet'', 1(531), 193–200. Species The following species of ''Leuconia'' are accepted in the World Porifera database: *''Leuconia alaskensis'' de Laubenfels, 1953de Laubenfels, M. W. (1953). Sponges of the Alaskan Arctic. ''Smithsonian Miscellaneous Publications'', 121(6), 1–22. *''Leuconia dura'' (Hozawa, 1929)Hozawa, S. (1929). Studies on the calcareous sponges of Japan. ''Journal of the Faculty of Scinece, Imperial University of Tokyo, Zoology'', 1, 277–389. *''Leuconia gladiator'' (Dendy, 1893)Dendy. A. (1892). Synopsis of the Australian Calcarea Heterocœla; with a proposed classification of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuconia Gladiator
''Leuconia'' is a genus of calcareous sponges in the family Baeriidae. It was described by English anatomist and zoologist Robert Edmond Grant in 1833.Grant, R. E. (1833). Lectures on Comparative Anatomy and Animal Physiology. Lecture IV. On the classification of the organs of animals, and on the organs of support in animalcules and poripherous animals. ''The Lancet'', 1(531), 193–200. Species The following species of ''Leuconia'' are accepted in the World Porifera database: *''Leuconia alaskensis'' de Laubenfels, 1953de Laubenfels, M. W. (1953). Sponges of the Alaskan Arctic. ''Smithsonian Miscellaneous Publications'', 121(6), 1–22. *''Leuconia dura ''Leuconia'' is a genus of calcareous sponges in the Family (biology), family Baeriidae. It was described by English anatomist and zoologist Robert Edmond Grant in 1833.Grant, R. E. (1833). Lectures on Comparative Anatomy and Animal Physiology. ...'' (Hozawa, 1929)Hozawa, S. (1929). Studies on the calcareous sponges of Jap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuconia Johnstoni
''Leuconia'' is a genus of calcareous sponges in the family Baeriidae. It was described by English anatomist and zoologist Robert Edmond Grant in 1833.Grant, R. E. (1833). Lectures on Comparative Anatomy and Animal Physiology. Lecture IV. On the classification of the organs of animals, and on the organs of support in animalcules and poripherous animals. ''The Lancet'', 1(531), 193–200. Species The following species of ''Leuconia'' are accepted in the World Porifera database: *''Leuconia alaskensis'' de Laubenfels, 1953de Laubenfels, M. W. (1953). Sponges of the Alaskan Arctic. ''Smithsonian Miscellaneous Publications'', 121(6), 1–22. *''Leuconia dura'' (Hozawa, 1929)Hozawa, S. (1929). Studies on the calcareous sponges of Japan. ''Journal of the Faculty of Scinece, Imperial University of Tokyo, Zoology'', 1, 277–389. *''Leuconia gladiator ''Leuconia'' is a genus of calcareous sponges in the family Baeriidae. It was described by English anatomist and zoologist Robert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuconia Joubini
''Leuconia'' is a genus of calcareous sponges in the family Baeriidae. It was described by English anatomist and zoologist Robert Edmond Grant in 1833.Grant, R. E. (1833). Lectures on Comparative Anatomy and Animal Physiology. Lecture IV. On the classification of the organs of animals, and on the organs of support in animalcules and poripherous animals. ''The Lancet'', 1(531), 193–200. Species The following species of ''Leuconia'' are accepted in the World Porifera database: *''Leuconia alaskensis'' de Laubenfels, 1953de Laubenfels, M. W. (1953). Sponges of the Alaskan Arctic. ''Smithsonian Miscellaneous Publications'', 121(6), 1–22. *''Leuconia dura'' (Hozawa, 1929)Hozawa, S. (1929). Studies on the calcareous sponges of Japan. ''Journal of the Faculty of Scinece, Imperial University of Tokyo, Zoology'', 1, 277–389. *''Leuconia gladiator'' (Dendy, 1893)Dendy. A. (1892). Synopsis of the Australian Calcarea Heterocœla; with a proposed classification of the group and descri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
