542 MA PHANEROZOIC EON (542MA-present) PALEOZOIC
ERA
(542-251 MA) CAMBRIAN PERIOD (542-488.3
MA) Vendian
Supercontinent (Pannotia) breaks up in Early Cambrian
Avalonia
drifts northward from Gondwana
Iapetus
Ocean (600-400 MA)
Many
aquatic plants Some
plants invade land First shell-forming invertebrate animals - attributed to rising alkilinity of ocean Trilobites Paradoxides
- large Middle Cambrian trilobite of the Atlantic/Avalonian faunal culture
- good guide fossil Bracholopods
and many other invertebrates Shell
fossils begin to appear commonly EARLY
CAMBRIAN EPOCH
(542-513
MA) TERRENEUVIAN
EPOCH
(542-521
MA) FORTUNIAN
STAGE
(542-528
MA) 528 MA
STAGE
2 (7
M)
(528-521
MA) 521 MA SERIES
2
(521-510 MA) STAGE
3
(521-515
MA) 513.5 Ma
Sinsk Event - First Mass extintion of Phanerozoic 513.5 Ma
513 MA MIDDLE
CAMBRIAN EPOCH (513-501 MA) 510 MA
SERIES
3
(510-499 MA) STAGE
5
(510-506.5
MA) 506 MA
DRUMIAN
STAGE
(506.5-503
MA) 503 MA
GUZHANGIAN
STAGE
(503-499 MA)501 MA LATE
CAMBRIAN EPOCH
(501-488.3MA) 500 MA Gondwana Supercontinent forms (500MA-200MA) 499 MA FURONGIAN
EPOCH
(499-488.3 MA) PAIBIAN
STAGE
(499-496
MA) 496 MA
STAGE
9
(496-492
MA) 492 MA
STAGE
10
(492-488.3)