Middle ages 1327 dating system
) 13,800,000,000 (13.8 billion) years ago The creation of the universe according to present estimates of "big bang" - "Stephen Hawkings and others...
estimate between 18 and 11 billion with 13.8 being the closest estimation".
starting about 2.500,000,000 years ago, sedimentary rocks affected by higher amounts of oxygen in the atmosphere, appear red, as though rusted. Fossils include earliest fish, but of types very different from modern ones. signs of the "tentative presence" of plants on land.
Mesoproterozoic from 1,600,000,000 to 1,000,000,000 years ago. Particular importance attaches to occurred around 1,300,000,000 years ago during the late Mesoproterzoic era, after the earth's transition to a more highly oxygenated atmosphere with an ozone screen. Deposits that made Westmorland Green slate formed around 450 million years ago. About 50 million years later, the material was altered by heat and pressure (metamorphosed) to slate, during mountain-building. After many more millions of years, they resembled patches of moss a few centimeters high.
Toulouse, chief town of the Tectosagi, at the end of the second century B. tried to shake off the yoke of Rome during the invasion of the Cimbri, but at the beginning of the empire it was a prosperous Roman civitas with famous schools in which the three brothers of the Emperor Constantine were pupils.
In the fourth century it was reckoned the fifteenth town in importance in the empire.
Martial (see LIMOGES, DIOCESE OF), but as far as historical evidence goes the see seems to have been founded by St. Erembert (657), a monk of Fontenelle who returned to his monastery to die.
A RCHDIOCESE OF T OULOUSE (T OLOSENSIS ) Includes the Department of Haute-Garonne.
As re-established by the Concordat of 1802 it included the departments of Haute-Garonne and Ariege, at which time, the archbishop joined to his own the title of Auch, jurisdiction over Auch being given to the Diocese of Agen, also the title of Narbonne, an archdiocese over which jurisdiction went by the Concordat to the Diocese of Carcassonne, and the title of Albi, over which, though formerly an archdiocese, jurisdiction went by the Concordat to the See of Montpellier.
It is suggested that analysis of sedimentary pyrite from the Belingwe sedimentary basin in Zimbabwe may provide evidence for bacterial reduction at this date.
2,500,000,000 to 542,000,000 years ago The Proterozoic Eon: the most recent part of the Precambrian Supereon.