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.
The Edwardian Period. By: Alyssa Wallace. The Edwardian Period was the time in the United Kingdom with the reign of King Edward VII from 1901-1914. This period was marked with occurence such as the Titanic and the start of WW1. Durung this era the society, arts, and science were all evolving.It was an era when social differences disperced and customs, and expectations of society came together.