duckbill


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Related to duckbill: Vise-Grip

paddlefish

paddlefish, large freshwater fish, Polyodon spathula, of the Mississippi valley, also called spoonbill or duckbill and named for its flattened, paddle-shaped snout. The largest specimens weigh well over 150 lb (67.5 kg) and reach 6 ft (183 cm) in length. The snout may be a third of the length of the body; it is equipped with sense organs that assist the fish in finding its prey of small crustaceans, which it strains out with gill rakers (see gill). Paddlefishes are primitive; unlike most modern fishes, they have skins with reduced scales, almost wholly cartilaginous skeletons, and upturned tail fins. They are uniform leaden gray in color. Valued as food fish, their greenish black eggs, like the more highly valued ones of the distantly related sturgeon, are used to make caviar. A Chinese species, Psephurus gladius, found in the Chang (Yangtze) River but now believed to be extinct, reportedly grew up to 23 ft (7 m) in length, though modern recorded individuals were about half that size. Paddlefishes are classified in the phylum Chordata, subphylum Vertebrata, class Actinopterygii, order Acipenseriformes, family Polyodontidae.

platypus

platypus (plătˈəpəs), 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 venom-secreting gland. This spur is probably used as a weapon, but its use is unclear; the males only produce venom during the breeding season. 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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duckbill

[′dək‚bil]
(mechanical engineering)
A shaking type of combination loader and conveyor whose loading end is generally shaped like a duck's bill.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
And she could have lived happily forever with her fur and her claws, her duckbill and web-feet, had not a black snake entered her lair in search of a place to rest.
A different system using a duckbill valve also implements a baffle system.
This northernmost record greatly increases the probability that duckbilled eels will be found in Alaskan waters.
Paleontologists said they have uncovered 50 vertebrae of Mexico''s first complete dinosaur tail of what they believe may be the remains of a Hadrosaur or crested duckbill dinosaur.
The country's National Institute of Anthropology and History said that the tail is about 15 feet (5 meters) long and resembles that of a hadrosaur or crested duckbill dinosaur, the New York Daily News reported.
The Laerdal valve (Figure 2) uses a different system, namely a duckbill type one-way valve made of silicone that opens during inspiration and also impinges upon a flat silicone ring that moves to close the exit port during IPPV.
Rather than the more subjective species count, which is typically used, we took a disparity approach--a mathematical measurement of how much morphological variation is in a sample, in our case, duckbill skulls.
If you live in a windy area, consider adding duckbill anchors (see Foresight Products.com/duckprod.html) to secure the ground frame.
"Last of the Widows of the Duckbill Seam was written about the Easington Mining Disaster when 83 men were killed 60 years ago.
Also, a duckbill backflow preventer had to be removed prior to CCTV verification.
The spade-shaped grip safety created by Jim Hoag, and the duckbill style that followed it, were a Godsend for comfort, and the duckbill's upswept tang helped guide the reaching hand into grasping position for a faster, surer draw under stress.
-- Singapore animation company Sparky Animation will partner Japan's Duckbill Entertainment, Bandai Visual Inc and Baku Enterprise Inc to co-produce a 52x11min CG-animated series "One Stormy Night".