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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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search.types.interactivemap

Dinosaur Fossils in Canada Interactive Map

The map below indicates the location of dinosaur fossils found in Canada. Click on the individual dinosaur icons to learn the name of the dinosaur identified at that location, the period during which it lived, as well as other information. (See also Dinosaurs and Canada.)
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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

Dinosaurs Found in Canada

Canada is home to some of the richest deposits of dinosaur fossils in the world (see also Dinosaurs and Canada). The vast majority of the dinosaurs discovered in Canada are from Alberta, where the rising Rocky Mountains at the end of the Cretaceous period and a network of ancient rivers provided the sediment necessary for burying and preserving their remains. The names of many of the 88 dinosaurs listed below pay homage to the province, including Albertosaurus sarcophagus, Edmontosaurus regalis and Ornithomimus edmontonicus. Others honour prominent people in Canadian paleontology, for example, Lambeosaurus for Lawrence Lambe, a paleontologist active at the turn of the 20th century, Epichirostenotes curriei for Philip Currie, a paleontologist and the founder of the Royal Tyrrell Museum and Borealopelta markmitchelli for Mark Mitchell, an RTM technician who spent 7,000 hours removing rock from the fossil.
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Article

Dionne Case

Dionne Case (1978), known as Re Public Service Board et al, Dionne et al, and Attorney General of Canada et al.
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Diorama

Diorama, museum exhibit which creates the illusion of a natural or historic scene. Typically, mounted animals and preserved plants blend imperceptibly into a realistic background painting, simulating a natural habitat (the name habitat group is sometimes used).
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Article

Dioxin

The term dioxin applies to any of 75 chlorinated derivatives of dibenzo-p-dioxin. The various types of dioxin are quite different from one another, the greatest difference being in their toxicity.
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Article

Diplomatic and Consular Representations

When representation is established by one independent state in the capital city of another independent state, the senior representative is usually an ambassador and the establishment is called an embassy. The term ambassadress has been used to describe a female ambassador.
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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

Direct-to-home Satellite Broadcasting

Direct-to-home (DTH) satellite broadcasting is a form of SATELLITE COMMUNICATION which offers consumers significantly more entertainment options than those offered by local cable companies.
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Article

Disability

Disability is defined by the World Health Organization (WHO) as the temporary, prolonged or permanent reduction or absence of the ability to perform certain commonplace activities or roles, sometimes referred to as activities of daily living.
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Article

Disability Rights Movement in Canada

The Canadian disability rights movement arose in the latter half of the 20th century. It includes multiple social movements that take a similar but distinct approach advocating civil rights for almost four million people with physical, sensory and cognitive impairments — nearly 14 per cent of the Canadian population.
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Article

Disallowance

The CONSTITUTION ACT of 1867 provides that any ACT of a provincial legislature must be promptly sent to the GOVERNOR GENERAL and that the governor general-in-council (federal CABINET) may disallow any such Act (wipe it off the statute book) within one year.
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Article

Arms Control and Disarmament

Since the 19th century, world powers have discussed arms control and disarmament — that is, reducing, limiting or abolishing certain weapons. They believe that to avoid war, weapons should be reduced in number or eliminated. Countries have sought to ban particularly destructive and inhumane weapons. These include weapons of mass destruction, like chemical, biological and nuclear weapons. (See Canada and Gas Warfare; Canada and Nuclear Weapons.) Conventional arms, like anti-personnel land mines or cluster munitions, have also been controlled. Canada notably led talks on banning the use of land mines. (See Ottawa Treaty.) Canada is a signatory of multiple other arms control treaties, like the Nuclear Non-Proliferation Treaty, the Biological and Toxin Weapons Convention, and the Chemical Weapons Convention.
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Collection

Disasters

Historic Canadian disasters include those caused by both humans and nature. Some, such as the Halifax Explosion, are rare, tragic accidents now etched in the country’s history. Others, such as forest fires and avalanches, are annual, natural occurrences that sometimes wreak havoc. This collection gathers survey articles on different types of disasters, as well as content on individual, historic events.
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