Devonian Time- 1 year=1 million years By LiamBenJoseph Period: Apr 25, 1954 to Apr 25, 2011 Devonian Time Apr 26, 1955 North America and Europe Colliding Apr 26, 1958 Fish with Bony Skin Develop Oct 18, 1960 Rhynie Chert Rhynie Chert forms Sep 17, 1965 Kellwasser Event Mass Extinction Sep 29, 1974 Lots Of Plants Start To Grow On Land Apr 26, 1995 Gondwana Begins to Form Jun 15, 2007 S.American Glaciation Glaciation of S.America Dec 25, 2010 Hangenberg Event Late Devonian Mass Extinction