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The platypus Ornithorhynchus anatinus , [3] sometimes referred to as the duck-billed platypus , [4] is a semiaquatic , egg-laying mammal endemic to eastern Australia , including Tasmania. The platypus is the sole living representative or monotypic taxon of its family Ornithorhynchidae and genus Ornithorhynchus , though a number of related species appear in the fossil record. Together with the four species of echidna , it is one of the five extant species of monotremes , mammals that lay eggs instead of giving birth to live young. Like other monotremes, the platypus senses prey in cloudy water through electrolocation. It is one of the few species of venomous mammals , as the male platypus has a spur on the hind foot that delivers an extremely painful venom.

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Ornithorhynchus anatinus duckbill watermole duckmole duck-billed platypus. Language Label Description Also known as English platypus. Duck-billed platypus Ornithorhynchus anatinus Scottsdale. Ornithorhynchus anatinus. George Shaw. Mammal Species of the World Third edition. Platypus English. Schnabeltier German. Duck-billed platypus English. Ornitorrinco Spanish. Nokkloom Estonian. Ornithorynque French. Ornitorinco Italian.

The Naturalist's Miscellany Retrieved 21 June Encyclopedia of Life.

Shaw , Fixation: type by monotypy. Synonyms [ edit ] Platypus G. Shaw , text to plates — junior homonym Platypus Herbst , Coleoptera Gender: masculine. Type species: Platypus anatinus G. Dermipus Wiedemann , Gender: masculine. Volume BHL Blumenbach, F.

Il corpo e la larga coda piatta dell'ornitorinco sono coperti di pelliccia marrone. I primi coloni britannici lo chiamavano Water Mole talpa d'acqua. I cuccioli hanno molari a tre cuspidi molari tribosfenici , che sono una delle caratteristiche distintive dei mammiferi, mentre gli adulti sono privi di denti. Come in tutti i veri mammiferi, gli ossicini che portano il suono nell'orecchio interno sono completamente incorporati nel cranio, invece di trovarsi nella mascella come nei Cynodontia e in altri sinapsidi pre mammiferi. Comunque l'apertura esterna dell'orecchio si trova ancora alla base della mandibola. Ha anche un'andatura da rettile, con zampe poste ai lati del corpo piuttosto che sotto di esso. Inoltre, l'ornitorinco, essendo un monotrema, ha la cloaca , ovvero un unico buco dal quale deporre le uova, urinare e defecare. Il maschio dell'ornitorinco possiede, in ognuna delle zampe posteriori, uno sperone cavo, che usa per iniettare un veleno prodotto dalle ghiandole crurali , e che usa per difesa dai predatori o nei combattimenti per il territorio. L'assenza dello sperone cavo nella femmina di ornitorinco, tuttavia, non consente di affermare con assoluta certezza che l'uso dello sperone cavo sia esclusivamente finalizzato alla difesa. Per il veleno non esiste ancora un antidoto.

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The platypus is among nature's most unlikely animals. In fact, the first scientists to examine a specimen believed they were the victims of a hoax. The animal is best described as a hodgepodge of more familiar species: the duck bill and webbed feet , beaver tail , and otter body and fur. Males are also venomous. They have sharp stingers on the heels of their rear feet and can use them to deliver a strong toxic blow to any foe.

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Archivado desde el original el 14 de marzo de Ferganodon Klamelia. Duck-billed platypus English. Affected platypuses can develop skin lesions or ulcers on various parts of their bodies, including their backs, tails, and legs. Archived from the original on 16 July Australian Conservation Foundation. Small Brockhaus and Efron Encyclopedic Dictionary. Monotrematum sudamericanum , another fossil relative of the platypus, has been found in Argentina , indicating monotremes were present in the supercontinent of Gondwana when the continents of South America and Australia were joined via Antarctica until about million years ago. Consultado el 13 de febrero de Archived from the original on 31 October Archived from the original on 23 July

Tachyglossidae Tachylossus e Zaglossus. A areia contida junto com o alimento serve de material abrasivo, ajudando no ato de mastigar. Em , ele encontrou um filhote morto, de cerca de 50 dias de idade, que tinha, presumivelmente, nascido em cativeiro, no Parque da Vida Selvagem David Fleay , em Burleigh Heads , Queensland.

Start a Wiki. Consultado el 15 de junio de Arcana, or, The museum of natural history: containing the most recent discovered objects: embellished with coloured plates, and corresponding descriptions: with extracts relating to animals, and remarks of celebrated travellers; combining a general survey of nature. Archivado desde el original el 14 de diciembre de The authors stressed the need for national conservation efforts, which might include conducting more surveys, tracking trends, reduction of threats and improvement of river management to ensure healthy platypus habitat. Department of the Environment, Water, Heritage and the Arts. Reprod Fertil Dev. Additional references [ edit ] Palmer, T. Marshall Graves 16 December Acta Palaeontologica Polonica. Davidson College. Archived from the original on 8 March In recent studies it has been suggested that the eyes of the platypus are more similar to those of Pacific hagfish or Northern Hemisphere lampreys than to those of most tetrapods.