443.7 MA SILURIAN 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 LLANDOVERY EPOCH (15.5 M) (443.7-428.2
MA) RHUDDANIAN
STAGE (4.7
M)
(443.7-439
MA) 439 MA
AERONIAN
STAGE (3
M)
(439-436 MA)436 MA
TELYCHIAN
STAGE (7.8
M)
(436-428.2 MA) 428.2 MA WENLOCK
EPOCH (5.3
M)
(428.2-422.9 MA)
SHEINWOODIAN STAGE (2
M)
(428.2-426.2
MA) 426.2 MA
HOMERIAN
STAGE (3.3
M)
(426.2-422.9 MA) 422.9 MA LUDLOW
EPOCH (4.2
M)
(422.9-418.7 MA) GORSTIAN
STAGE (1.6
M)
(422.9-421.3
MA) 421.3 MA
LUDFORDIAN
STAGE (2.6
M)
(421.3-418.7 MA) 418.7 MA PRIDOLI
EPOCH (2.7
M)
(418.7-416 MA)
STAGE 1 - PRIDOLI (2.7
M)
(418.7-416
MA)