Floian (1 Jan 477100000 Jahr v. Chr. – 1 Jan 471300000 Jahr v. Chr.)
Beschreibung:
The Floian is the second stage of the Ordovician Period. It succeeds the Tremadocian with which it forms the Lower Ordovician series. It precedes the Dapingian Stage of the Middle Ordovician. The Floian extended from 477.1 to 471.3 million years ago. The lower boundary is defined as the first appearance of the graptolite species Tetragraptus approximatus.Zugefügt zum Band der Zeit:
Datum:
1 Jan 477100000 Jahr v. Chr.
1 Jan 471300000 Jahr v. Chr.
~ 5803853 years