Vertebrate Zoology

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platypus

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

platypus , semiaquatic egg-laying mammal, Ornithorhynchus anatinus, of Tasmania and E Australia. Also called duckbill, or duckbilled platypus, it belongs to the order Monotremata (see monotreme ), the most primitive group of living mammals. The only other member of this group is the echidna , or spiny anteater.

The head, trunk, and tail of the platypus are broad and flattened and covered with thick dark brown fur. The muzzle is shaped like a duck's bill and is soft and rubbery. It contains ridges used for crushing food; the animal has no teeth. The eyes are small and there are no external ears. The five-toed feet are webbed. The heel of the adult male bears a hollow spur connected to a poison-secreting gland; this spur is probably used as a weapon. Females lose their spurs at about one year of age. The adult male platypus is about 2 ft (60 cm) long, including the 5 or 6 in. (13–15 cm) tail; it weighs about 4 lb. The female is slightly smaller.

The platypus is found from tropical swamps at sea level to cold lakes at altitudes of 6,000 ft (1,830 m). Its diet consists entirely of small freshwater animals dredged from muddy bottoms. Prey captured underwater are stored in cheek pouches and eaten at the surface or on land.

Platypuses live in pairs in simple burrows in stream banks, except during the breeding season, when the female makes a separate and more elaborate burrow containing a nesting chamber approached by a long tunnel. One, two, or three eggs are laid at a time and are incubated, in birdlike fashion, by the female. The female lacks nipples, and the young lick milk from the fur around the many small abdominal openings of the mammary glands. The platypus is classified in the phylum Chordata , subphylum Vertebrata, class Mammalia, order Monotremata, family Ornithorhynchidae.

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platypus

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

plat·y·pus / ˈplatəpəs; -ˌpoŏs/ • n. (pl. platypuses ) a semiaquatic egg-laying mammal (Ornithorhynchus anatinus, family Ornithorhynchidae) that frequents lakes and streams in eastern Australia. It has a sensitive pliable bill shaped like that of a duck, webbed feet with venomous spurs, and dense fur. ORIGIN: late 18th cent.: modern Latin, from Greek platupous ‘flatfooted,’ from platus ‘flat’ + pous ‘foot.’

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platypus

World Encyclopedia | 2005 | Copyright

platypus Monotreme mammal of Australia and Tasmania. It is amphibious, lays eggs and has webbed feet, a broad tail and a soft duck-like bill. The male has a poison spur on the hind foot. It is 60cm (24in) long and eats small invertebrates. Family Ornithorhynchidae; species Ornithorhynchus anatinus.

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platypus

A Dictionary of Zoology | 1999 | | Copyright

platypus (Ornithorhynchus anatinus) See ORNITHORHYNCHIDAE.

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MICHAEL ALLABY. "platypus." A Dictionary of Zoology. 1999. Encyclopedia.com. 29 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "platypus." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 29, 2012). http://www.encyclopedia.com/doc/1O8-platypus.html

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platypus

Oxford Dictionary of Rhymes | 2007 | Copyright

platypus •Chiapas, tapas •campus, grampus, hippocampus, pampas •metacarpus, streptocarpus •trespass • Priapus • Lepus •Aristippus, Lysippus •Olympus • Oedipus • platypus •pompous •corpus, porpoise •Canopus, opus •lupus, upas •compass, encompass, rumpus •octopus •multipurpose, purpose

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Free newspaper and magazine articles

	Not very much about the platypus is typical.(Neighbor)(Kids ink) Newspaper article from: Daily Herald (Arlington Heights, IL); 11/16/2005
	A paddle of platypuses.(National Library of Australia) Magazine article from: National Library of Australia Gateways; 6/1/2009
	The peculiar platypus.(Editorials)(Genetics confirm what Oregonians... Newspaper article from: The Register Guard (Eugene, OR); 5/10/2008