Notes: 1  In 1997, MLB retired Jackie Robinson's number 42 meaning no other player in MLB could ever wear it. However, it was grandfathered to anyone who was currently wearing the number. 2  Mariano Rivera is the only Yankee to appear as an active player while wearing his retired number.
The Ordovician Period. The Ordovician Period lasted almost 45 million years, beginning 488.3 million years ago and ending 443.7 million years ago.* During this period, the area north of the tropics was almost entirely ocean, and most of the world's land was collected into the southern supercontinent Gondwana.
Tudor period. The Tudor period is the period between 1485 and 1603 in England and Wales and includes the Elizabethan period which ends with the completion of the reign of Elizabeth I in 1603. The Tudor period coincides with the rule of the Tudor dynasty in England whose first monarch was Henry VII (1457â1509). In terms of the entire century, Guy (1988) argues that England was economically healthier, more expansive, and more optimistic under the Tudors than at any time in a thousand years.