Era encyclopedia
February 27th 2008
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Era encyclopedia
Common Era - Wikipedia, the free encyclopedia
Common Era (also known as Christian Era [1] and Current Era [2]) is a designation for the period of time beginning with year 1 of the proleptic Gregorian calendar. (more...)
era - Hutchinson encyclopedia article about era
era. Any of the major divisions of geological time that includes several periods but is part of an eon. The eras of the current Phanerozoic in chronological order are the ... (more...)
Era - Wikipedia, the free encyclopedia
An era is a commonly used word for long period of time. When used in science, for example geology, eras denote clearly defined periods of time of arbitrary but well defined length ... (more...)
era definition of era in the Free Online Encyclopedia.
era, period of historic time. In geology, it is the name applied to large divisions of geological process, e.g., Paleozoic era (see geology geology, science of the earth's history ... (more...)
Paleozoic Era - MSN Encarta
Paleozoic Era, major division of geological time, preceded by Precambrian time and followed by the Mesozoic Era, and including the Cambrian, ... (more...)
hadron era – Dictionary Definition of hadron era | Encyclopedia.com ...
Definition Of hadron era – Our online dictionary has hadron era Information from A Dictionary of Astronomy dictionary. Encyclopedia.com: English, Psychology, Medical dictionaries (more...)
era - definition of era by the Free Online Dictionary, Thesaurus and ...
era : Also found in: Legal, Acronyms, Encyclopedia, Wikipedia, Hutchinson: 0.02 sec. ... ERA n abbr (US) (Pol) (= Equal Rights Amendment) → amendement sur l ... (more...)
Era names definition of Era names in the Free Online Encyclopedia.
era, period of historic time. In geology, it is the name applied to large divisions of geological process, e.g., Paleozoic era (see geology geology, science of the earth's history ... (more...)
era of good feelings – FREE era of good feelings Information ...
era of good feelings – Facts about era of good feelings, Pictures, Video and era of good feelings Information at Encyclopedia.com: a free, credible collection of encyclopedias. (more...)
Mesozoic Era - MSN Encarta
Mesozoic Era, one of the major divisions of geologic time, following the Paleozoic Era and preceding the Cenozoic Era. The Mesozoic Era, which lasted. (more...)