John R. "Jack" Horner Paleontologist Melissa Sogard Starting at an Early Age RELATED LINKS Dinosaur NewsFor Kids: DinosaursDinosaur Hall of FameDinosaurs: Fact and…
(Encyclopedia) ehrlichiosisehrlichiosisârlĭkēōˈsĭs [key], any of several diseases caused by rickettsia of the genera Ehrlichia and Anaplasma. Ehrlichiosis is transmitted by ticks. Both human forms…
(Encyclopedia) communicable diseases, illnesses caused by microorganisms and transmitted from an infected person or animal to another person or animal. Some diseases are passed on by direct or…
(Encyclopedia)
CE5
A. Dorsal view of a chiton, representative mollusk of the class Amphineura
B. Internal anatomy of a chiton
chitonchitonkīˈtən [key], common name for rock-clinging marine…
(Encyclopedia) goat, ruminant mammal with hollow horns and coarse hair belonging to the genus Capra of the cattle family and closely related to the sheep. True wild goats, all of Old World origin,…
(Encyclopedia) American Fur Company, chartered by John Jacob Astor (1763–1848) in 1808 to compete with the great fur-trading companies in Canada—the North West Company and the Hudson's Bay Company.…
(Encyclopedia) jaguarjaguarjăgˈwär [key], large New World carnivore of the cat family, Panthera onca. Jaguars range from the SW United States to S central Argentina, though there have been no…
(Encyclopedia) Paleocene epochPaleocene epochpāˈlēəsēnˌ [key], first epoch of the Tertiary period in the Cenozoic era of geologic time (see geologic timescale) between 60 to 66 million years ago. In…
(Encyclopedia) baboon, any of the large, powerful, ground-living monkeys of the genus Papio, also called dog-faced monkeys. Five subspecies live in Africa, with one species extending into the Arabian…
(Encyclopedia) Mackenzie, river, c.1,120 mi (1,800 km) long, issuing from Great Slave Lake, Northwest Territories, Canada, and flowing generally NW to the Arctic Ocean through a great delta. Between…
