Spade-toothed Whale
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Spade-toothed Whale
The spade-toothed whale (''Mesoplodon traversii'') is a very little-known species, the rarest species of beaked whale. It was first named from a partial jaw found on Pitt Island, New Zealand, in 1872; reported and illustrated in 1873 by James Hector (referring it to ''M. layardii''), and described as a new species the next year by John Edward Gray, who named it in honor of Henry Hammersley Travers, the collector. This was eventually lumped with the strap-toothed whale, starting as early as an 1878 article by Hector, who never considered the specimen to be specifically distinct. A calvaria found in the 1950s at White Island, also New Zealand, initially remained undescribed, but was later believed to be from a ginkgo-toothed beaked whale. In 1993, a damaged calvaria was found washed up on Robinson Crusoe Island, Chile, and was described as a new species, ''Mesoplodon bahamondi'' or Bahamonde's beaked whale.Reyes, J.C.; van Waerebeek, K; Cárdenas J.C. & Yáñez, J.L. (1995): ''M ...
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John Edward Gray
John Edward Gray, FRS (12 February 1800 – 7 March 1875) was a British zoologist. He was the elder brother of zoologist George Robert Gray and son of the pharmacologist and botanist Samuel Frederick Gray (1766–1828). The same is used for a zoological name. Gray was keeper of zoology at the British Museum in London from 1840 until Christmas 1874, before the natural history holdings were split off to the Natural History Museum. He published several catalogues of the museum collections that included comprehensive discussions of animal groups and descriptions of new species. He improved the zoological collections to make them amongst the best in the world. Biography Gray was born in Walsall, but his family soon moved to London, where Gray studied medicine. He assisted his father in writing ''The Natural Arrangement of British Plants'' (1821). After being blackballed by the Linnean Society of London, Gray shifted his interest from botany to zoology. He began his zoologica ...
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Morphology (biology)
Morphology is a branch of biology dealing with the study of the form and structure of organisms and their specific structural features. This includes aspects of the outward appearance (shape, structure, colour, pattern, size), i.e. external morphology (or eidonomy), as well as the form and structure of the internal parts like bones and organs, i.e. internal morphology (or anatomy). This is in contrast to physiology, which deals primarily with function. Morphology is a branch of life science dealing with the study of gross structure of an organism or taxon and its component parts. History The etymology of the word "morphology" is from the Ancient Greek (), meaning "form", and (), meaning "word, study, research". While the concept of form in biology, opposed to function, dates back to Aristotle (see Aristotle's biology), the field of morphology was developed by Johann Wolfgang von Goethe (1790) and independently by the German anatomist and physiologist Karl Friedrich Burdach ...
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Chilean National Museum Of Natural History
The Chilean National Museum of Natural History ( es, Museo Nacional de Historia Natural, links=no or ) is one of three national museums in Chile, along with the Museum of Fine Arts and the National History Museum. It is located in Quinta Normal Park. Founded on September 14, 1830 by the French naturalist Claudio Gay, the director of the Museum and the Botanical garden was another Frenchman Jean-François Dauxion-Lavaysse. History The museum is one of the oldest natural history museums in South America. It was founded on September 14, 1830 by the French naturalist Claudio Gay, commissioned by the Chilean government. Its first director was another Frenchman Jean-François Dauxion-Lavaysse.Its original mandate was the biology and geography of Chile, with a concentration on crops and mineral resources. The current building was constructed in 1875 as a palace, or pavilion, for the Chilean International Exhibition. In 1889 departments of botany, zoology, and mineralogy were establish ...
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Auckland University
The University of Auckland is a public university, public research university based in Auckland, New Zealand. It is the largest, most comprehensive and highest-ranked university in New Zealand and consistently places among the top 100 universities in the QS World University Rankings. The institution was established in 1883 as a constituent college of the University of New Zealand. Originally it was housed in a disused courthouse. Today, the University of Auckland is List of universities in New Zealand, New Zealand's largest university by enrolment, hosting about 40,000 students on five Auckland campuses. The City Campus, in the Auckland CBD, has the bulk of the students and faculty (division), faculties. There are eight faculties, including a University of Auckland Law School, law school, as well as three associated research institutes. History Origins The University of Auckland began as a constituent college of the University of New Zealand, founded on 23 May 1883 as ''Auckla ...
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NMNZ
The Museum of New Zealand Te Papa Tongarewa is New Zealand's national museum and is located in Wellington. ''Te Papa Tongarewa'' translates literally to "container of treasures" or in full "container of treasured things and people that spring from mother Earth here in New Zealand". Usually known as Te Papa (Māori for "the treasure box"), it opened in 1998 after the merging of the National Museum of New Zealand and the National Art Gallery. An average of more than 1.5 million people visit every year, making it the 17th-most-visited art gallery in the world. Te Papa's philosophy emphasises the living face behind its cultural treasures, many of which retain deep ancestral links to the indigenous Māori people. History Colonial Museum The first predecessor to Te Papa was the ''Colonial Museum'', founded in 1865, with Sir James Hector as founding director. The Museum was built on Museum Street, roughly in the location of the present day Defence House Office Building. The muse ...
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IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provi ...
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Pacific Islands Cetaceans Memorandum Of Understanding
The Memorandum of Understanding (MoU) for the Conservation of Cetaceans and their Habitats in the Pacific Island Region is a Multilateral Environmental Memorandum of Understanding concluded under the auspices of the Convention on Migratory Species of Wild Animals (CMS), also known as the Bonn Convention, and in collaboration with the Pacific Regional Environment Programme (SPREP). The MoU provides an international framework for coordinated conservation efforts to improve the conservation status of the Pacific Islands Cetaceans and came into effect on 15 September 2006. The MoU covers 22 range States (Australia, Cook Islands, Federated States of Micronesia, Fiji, French Polynesia, Kiribati, Marshall Islands, Nauru, New Caledonia (to France), New Zealand, Niue, Palau, Papua New Guinea, Samoa, Solomon Islands, Tokelau, Tonga, Tuvalu, United Kingdom (Pitcairn Island), United States (including American Samoa, Guam and the Northern Mariana Islands), Vanuatu and Wallis and Futuna (t ...
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Cephalopod
A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, and a set of arms or tentacles (muscular hydrostats) modified from the primitive molluscan foot. Fishers sometimes call cephalopods "inkfish", referring to their common ability to squirt ink. The study of cephalopods is a branch of malacology known as teuthology. Cephalopods became dominant during the Ordovician period, represented by primitive nautiloids. The class now contains two, only distantly related, extant subclasses: Coleoidea, which includes octopuses, squid, and cuttlefish; and Nautiloidea, represented by ''Nautilus'' and ''Allonautilus''. In the Coleoidea, the molluscan shell has been internalized or is absent, whereas in the Nautiloidea, the external shell remains. About 800 living species of cephalopods have been ident ...
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Mesoplodon
Mesoplodont whales are 16 species of toothed whale in the genus ''Mesoplodon'', making it the largest genus in the cetacean order. Two species were described as recently as 1991 (pygmy beaked whale) and 2002 (Perrin's beaked whale), and marine biologists predict the discovery of more species in the future. A new species was described in 2021. They are the most poorly known group of large mammals. The generic name "mesoplodon" comes from the Greek ''meso''- (middle) - ''hopla'' (arms) - ''odon'' (teeth), and may be translated as 'armed with a tooth in the centre of the jaw'. Physical description Mesoplodont beaked whales are small whales, (pygmy beaked whale) to (strap-toothed whale) in length, even compared with closely related whales such as the bottlenose whales and giant beaked whales. The spindle-shaped body has a small dorsal fin and short and narrow flippers. The head is small and tapered and has a semicircular blow hole that is sometimes asymmetric. The beak, which ...
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Phylogenetic
In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups of organisms. These relationships are determined by Computational phylogenetics, phylogenetic inference methods that focus on observed heritable traits, such as DNA sequences, protein amino acid sequences, or morphology. The result of such an analysis is a phylogenetic tree—a diagram containing a hypothesis of relationships that reflects the evolutionary history of a group of organisms. The tips of a phylogenetic tree can be living taxa or fossils, and represent the "end" or the present time in an evolutionary lineage. A phylogenetic diagram can be rooted or unrooted. A rooted tree diagram indicates the hypothetical common ancestor of the tree. An unrooted tree diagram (a network) makes no assumption about the ancestral line, and does ...
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Flensing
Flensing is the removing of the blubber or outer integument of whales, separating it from the animal's meat. Processing the blubber (the subcutaneous fat) into whale oil was the key step that transformed a whale carcass into a stable, transportable commodity. It was an important part of the history of whaling. The whaling that still continues in the 21st century is both industrial and aboriginal. In aboriginal whaling the blubber is rarely rendered into oil, although it may be eaten as ''muktuk''. Terminology English whalemen called it ''flenching'', while American whalemen called it ''cutting-in''. Open-boat Shore and bay whaling In Spitsbergen, in the first half of the 17th century, the processing of whales was primarily done ashore. Where the whale was flensed differed between the English and Dutch. The English brought the whale to the stern of the ship, where men in a boat cut strips of blubber from the whale's back. These were tied together and rowed ashore, where th ...
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Rostrum (anatomy)
Rostrum (from Latin ', meaning ''beak'') is a term used in anatomy for a number of phylogenetically unrelated structures in different groups of animals. Invertebrates * In crustaceans, the rostrum is the forward extension of the carapace in front of the eyes. It is generally a rigid structure, but can be connected by a hinged joint, as seen in Leptostraca. * Among insects, the rostrum is the name for the piercing mouthparts of the order Hemiptera as well as those of the snow scorpionflies, among many others. The long snout of weevils is also called a rostrum. * Gastropod molluscs have a rostrum or proboscis. * Cephalopod molluscs have hard beak-like mouthparts referred to as the rostrum. File:Washington DC Zoo - Macrobrachium rosenbergii 6.jpg, Crustacean: the rostrum of the shrimp ''Macrobrachium rosenbergii'' is serrated along both edges. File:Gminatus australis with Beetle.jpg, Insect: assassin bug piercing its prey with its rostrum File:Architeuthis beak.jpg, Cephalopod: ...
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