Nature & Geography | The Canadian Encyclopedia

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  • Article

    Dinosaur Eggs

    Members of the Central Asiatic Expedition, led by the American Museum of Natural History, first recognized dinosaur eggs in Mongolia in the 1920s. Since then, paleontologists have discovered fossilized remains of dinosaur eggs at over 200 locations worldwide. These locations include sites in Africa, China, Europe, India, Korea, and the Americas. The first dinosaur eggs from North America were discovered in Montana in the late 1970s. In Canada, dinosaur eggshell fragments were initially found in the early 1980s. Complete dinosaur eggs were discovered in 1987 at a site in southern Alberta known as Devil’s Coulee.

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  • Article

    Dinosaur Hunting in Western Canada

    Most early discoveries were made in artificial excavations, eg, rock quarries or coal mines.

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  • Article

    Dipper

    The dipper (Cinclidae) family of birds comprises 5 species of birds known colloquially as water ouzel.

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  • Article

    Dobsonfly

    The dobsonfly is a large (100-140 mm), soft-bodied freshwater insect of order Megaloptera, family Corydalidae; smaller forms are called fishflies.

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  • Article

    Dock

    Dock, herbaceous plant of genus Rumex, family Polygonaceae (buckwheat); most docks are perennial. 

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  • Article

    Dogs in Canada

    Dog (Canis familiaris) is a carnivorous mammal, and probably the first domesticated animal. In Canada, dogs were first kept by Indigenous peoples. The Canadian Kennel Club recognizes 187 breeds, five of which are uniquely Canadian: the Tahltan bear dog, the Canadian Inuit dog, the Nova Scotia duck-tolling retriever, the Newfoundland dog and the Labrador retriever. A sixth dog breed indigenous to Canada, the Salish woolly dog, went extinct before the Canadian Kennel Club officially registered it as a breed.

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  • Article

    Dogwood

    Dogwood (Cornaceae), family of perennial herbaceous plants, trees and shrubs, represented in North America by about 15 members of the genus Cornus. 

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  • Article

    Dolphin and Porpoise

    Dolphin and Porpoise, are the common names for small, toothed mammals of the order Cetacea which also includes whales.

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  • Article

    Dominion of Canada

    Dominion of Canada is the country’s formal title, though it is rarely used. It was first applied to Canada at Confederation in 1867. It was also used in the formal titles of other countries in the British Commonwealth. Government institutions in Canada effectively stopped using the word Dominion by the early 1960s. The last hold-over was the term Dominion Day, which was officially changed to Canada Day in 1982. Today, the word Dominion is seldom used in either private or government circles.

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  • Article

    Dorion School Bus–Train Crash

    A collision between a school bus and a freight train on 7 October 1966 killed 19 students from Cité-des-Jeunes secondary school near Vaudreuil, Quebec, and their bus driver. The crash is among the worst road disasters in Canadian history.

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  • Article

    Douglas Fir

    Douglas fir (Pseudotsuga menziesii) is an evergreen conifer of the pine family (Pinaceae). 

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  • Article

    Dove

    Dove is the name applied to certain species of the pigeon family, especially to those of smaller size.

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  • Article

    Dragonfly

    Dragonfly, common name for robust carnivorous insects of order Odonata [Gk "toothed," referring to mouth parts].

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  • Article

    Drought

    Drought is the condition of critically low water supply caused by persistently below-normal precipitation.

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  • Editorial

    Drought in Palliser's Triangle

    The following article is an editorial written by The Canadian Encyclopedia staff. Editorials are not usually updated.

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