- The Ordovician (/ɔːrdəˈvɪʃi.ən, -doʊ-, -ˈvɪʃən/ or-də-VISH-ee-ən, -doh-, -VISH-ən) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period 485.4 million years ago (Mya) to the start of the Silurian Period 443.8 Mya.
- Joe Biden (allthetropes.org)
Joseph Robinette Biden Jr. (born November 20, 1942) is the 46th president of the United States of America. He is one of only eight people who served as Vice President before serving as President (in his case, he served under Barack Obama), and only the second person (after Richard Nixon) to have served as a Senator and as Vice President before becoming President. He’s also the oldest person to have been elected President of the United States of America.