145.5 MA CRETACEOUS145.5 PERIOD (80 M) (145.5-65.5
Flowering
plants appear Age
of Chalk - planktonic foraminifera Extinction
of much Mesozoic life - dinosaurs LOWER
CRETACEOUS EPOCH (145.5-99.6 BERRIASIAN
STAGE (5.3
(145.5-140.2 140.2 Ma
VALANGINIAN
STAGE
(140.2-133.9) 135 MA Teinolophos - earliest monotreme (egg laying mammal) lives in Australia
(ext.) 133.9 MA HAUTERIVIAN
STAGE
(133.9-130 130 Ma BARREMIAN
STAGE
(130-125
145.5 MA APTIAN
STAGE
(125-112
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
(112-99.6
110 Ma Most
recent "glacial period" on Earth begins (110Ma-12000BP) 100 Ma Great
Angiosperm Radiation - diversity of
flowering plants in the fossil record Most modern sharks present by this time 99.6 UPPER CRETACEOUS EPOCH
(99.6-65.5) CENOMANIAN
STAGE
(99.6-93.6
93.6 MA TURONIAN
STAGE
(93.6-88.6
90 MA Start
of primate line approximately 88.6 Ma CONIACIAN
STAGE
(88.6-85.8
85.8 MA
SANTONIAN
STAGE
(85.8-83.5 85 Ma Possible start
of primate line - Adapiformes 83.5 Ma /a> CAMPANIAN
STAGE
(83.5-70.6 70.6 Ma
MAASTRICHTIAN
STAGE
(70.6-65.5 68 Ma Tyrannosaurus
rex + (68-65 Ma) Triceratops
+
68-65 MA