Boreotropical flora were plants that may have formed a belt of vegetation around the Northern Hemisphere during the Eocene epoch. Plants are living Organisms belonging to the kingdom Plantae. Northern Hemisphere is the half of a Planet that is North of the Equator —the word hemisphere literally means 'half ball' The Eocene epoch (558 ± 02 - 339 ± 01 Ma) is a major division of the Geologic timescale and the second epoch of the Palaeogene period in These included forests composed of large, fast-growing trees (such as Dawn Redwood) as far north as 80°N. Metasequoia ( Dawn Redwood) is a fast growing Tree genus in the conifer family Cupressaceae of which Metasequoia glyptostroboides