-
May 8, 1110
106 Ma
the largest theropod dinosaur -
May 8, 1111
100 Ma
Earliest bees. -
May 8, 1111
251.4 mya The Mesozoic Marine Revolution begins
increasingly well-adapted and diverse predators pressurize sessile marine groups; the "balance of power" in the oceans shifts dramatically as some groups of prey adapt more rapidly and effectively than others. -
Period: May 8, 1111 to May 8, 1500
Mesozoic
-
May 8, 1112
245 Ma
Earliest ichthyosaurs -
May 8, 1112
80 Ma
First ants. -
May 8, 1113
225mya Earliest dinosaurs
Earliest dinosaurs -
May 8, 1114
200myaThe first accepted evidence for viruses
Viruses are still poorly understood and may have arisen before "life" itself, or may be a more recent phenomenon. -
May 8, 1115
170 May
Earliest salamanders, newts, cryptoclidid & elasmosaurid plesiosaurs. -
May 8, 1116
165 Ma
First rays and glycymeridid bivalves. -
May 8, 1117
155 Ma
First blood-sucking insects -
May 8, 1118
115 Ma
First monotreme mammals -
May 8, 1119
110 Ma
First hesperornithes, toothed diving birds.
