145.5 MA CRETACEOUS145.5 PERIOD (80 M) (145.5-65.5
MA) Flowering
plants appear Age
of Chalk - planktonic foraminifera Extinction
of much Mesozoic life - dinosaurs LOWER
CRETACEOUS EPOCH (45.9 M)(145.5-99.6 MA) BERRIASIAN
STAGE (5.3
M)
(145.5-140.2 MA) 140.2 MA
VALANGINIAN
STAGE (6.3
M)
(140.2-133.9 MA) 135 MA Teinolophos - earliest monotreme (egg laying mammal) lives in Australia
(ext.) 133.9 MA HAUTERIVIAN
STAGE (3.9
M)
(133.9-130 MA) 130 MA BARREMIAN
STAGE (5
M)
(130-125
MA) 145.5 MA APTIAN
STAGE (13
M)
(125-112
MA) Yutyrannus huali - largest feathered dinosaur yet found - at least 30 ft. long (in northeastern China)
Synodelphys - earliest marsupial (Metatheria) in China (Liaoning
Province) (ext.) Eomaia
scansoria - early eutheria-like (placental)
mammal - link to placentals (ext.) 112 MA ALBIAN112
STAGE (12.4
M)
(112-99.6
MA) 110 MA Most
recent "glacial period" on Earth begins (-10500 BCE) 100 MA Great
Angiosperm Radiation - diversity of
flowering plants in the fossil record Most modern sharks present by this time 99.6 UPPER CRETACEOUS99.6 EPOCH
(34.10)(99.6-65.5 MA) CENOMANIAN99.6
STAGE (6
M)
(99.6-93.6
MA) 93.6 MA TURONIAN93.6
STAGE (5
M)
(93.6-88.6
MA) 90 MA Start
of primate line? 88.6 MA CONIACIAN88.6
STAGE (2.8
M)
(88.6-85.8
MA) 85.8 MA
SANTONIAN85.8
STAGE
(2.3M)
(85.8-83.5 MA) 85 MA Possible start
of primate line Adapiformes 83.5 MA /a> CAMPANIAN83.5
STAGE (12.9 M)
(83.5-70.6 MA) 70.6 MA
MAASTRICHTIAN70.6
STAGE
(5.10)
(70.6-65.5 MA) 68 MA Tyrannosaurus
rex + 68-65 MA Triceratops
+
68-65 MA