HOME                                 Ordovician Period  (488.3MA-443.7MA)        Silurian Period (443.7MA-416MA)        Devonian Period (416MA-359.2MA)                History Timeline Index



443.7 MA               SILURIAN443.7 PERIOD  (27.7 M)             (443.7-416 MA)

                   Caledonian mountain building

                                Club mosses and other primitive land plants abundant

                                Arthropods - some may have invaded land

                   LLANDOVERY443.7 EPOCH (15.5 M)            (443.7-428.2 MA)

                   RHUDDANIAN443.7 STAGE (4.7 M)                                (443.7-439 MA)

439 MA             AERONIAN439 STAGE  (3 M)                                            (439-436 MA)

436 MA             TELYCHIAN436 STAGE  (7.8 M)                                       (436-428.2 MA)

428.2 MA           WENLOCK428.2  EPOCH  (5.3 M)                  (428.2-422.9 MA)                                                                      

                        SHEINWOODIAN428.2  STAGE  (2 M)                             (428.2-426.2 MA)

426.2 MA           HOMERIAN426.2  STAGE  (3.3 M)                                    (426.2-422.9 MA)

422.9 MA               LUDLOW422.9  EPOCH        (4.2 M)                         (422.9-418.7 MA)

                   GORSTIAN422.9  STAGE  (1.6 M)                                                (422.9-421.3 MA)

421.3 MA           LUDFORDIAN421.3  STAGE  (2.6 M)                               (421.3-418.7 MA)

418.7 MA               PRIDOLI418.7  EPOCH  (2.7 M)                      (418.7-416 MA)

                        STAGE 1 - PRIDOLI418.7  (2.7 M)                         (418.7-416 MA)


HOME                                 Ordovician Period  (488.3MA-443.7MA)        Silurian Period (443.7MA-416MA)        Devonian Period (416MA-359.2MA)                History Timeline Index