<Tr> <Td> Mean surface temperature over period duration </Td> <Td> c. 20 ° C (6 ° C above modern level) </Td> </Tr> <Tr> <Td> Sea level (above present day) </Td> <Td> Relatively steady around 189m, gradually falling to 120m through period </Td> </Tr> <Tr> <Td_colspan="2"> Events of the Devonian Period view discuss edit - 420---- - 415---- - 410---- - 405---- - 400---- - 395---- - 390---- - 385---- - 380---- - 375---- - 370---- - 365---- - 360---- - 355--Silurian Lochkovian Pragian Emsian Eifelian Givetian Frasnian Famennian Carbon - iferous ← Rhynie chert ← Hangenberg event ← Kellwasser event (s) ← Widespread shrubs & trees ← S. America glaciation begins ← Hunsrück fauna o n i n Palæozoic Key events of the Devonian Period . Axis scale: millions of years ago . </Td> </Tr> <P> The Devonian is a geologic period and system of the Paleozoic, spanning 60 million years from the end of the Silurian, 419.2 million years ago (Mya), to the beginning of the Carboniferous, 358.9 Mya . It is named after Devon, England, where rocks from this period were first studied . </P>

What were the major events in the devonian period
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