The Big Five Mass Extinctions:
End Ordovician, 444 million years ago, 86% of species lost
Graptolite 2-3 cm length
Late Devonian, 375 million years ago, 75% of species lost
Trilobite, 5 cm length
End Permian, 251 million years ago, 96% of species lost
Tabulate coral, 5 CM
End Triassic, 200 million years ago, 80% of species lost
Conodont teeth 1 mm
End Cretaceous, 66 million years ago, 76% of all species lost
Ammonite 15 cm length
I really doubt if the rich criminal gore can read.
credit for comment#2 to Hawg-farmer.
copied from an earlier thread.