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POSSIBLE EXTINCTION #6. “A large proportion of existing species — possibly half, conceivably even more — may be lost within the foreseeable future.” The cause: man. https://lnkd.in/eyRBipn View in LinkedIn

EXTINCTION #5. End of the Cretaceous: 66 million years ago, 76% of species lost. https://lnkd.in/efCSXC8 View in LinkedIn

EXTINCTION #4. End of the Triassic: 200 million years ago, 80% of species lost. https://lnkd.in/efCSXC8 View in LinkedIn

EXTINCTION #3. End of the Permian, "The Great Dying": 251 million years ago, 96% of species lost. https://lnkd.in/efCSXC8 View in LinkedIn

EXTINCTION #2. Late Devonian: 375 million years ago, 75% of species lost, https://lnkd.in/efCSXC8 View in LinkedIn

EXTINCTION #1. End of the Ordovician: 440 million years ago, 86% of all species lost. https://lnkd.in/efCSXC8 View in LinkedIn

FIVE MAJOR EXTINCTIONS have occurred during earth’s history. They are worth citing in order to show the massive scales of species loss at each event. https://lnkd.in/eRVF2gw View in LinkedIn

LUMPY RIDE. “The diversity of organismic form has evolved nonuniformly during the history of life.” https://lnkd.in/e4G_gYd View in LinkedIn

THE RUB. “There has been controversy between more traditional views of increased biodiversity through a cone of diversity with the passing of time and the view that the basic pattern on Earth has been one of annihilation and diversification.” https://lnkd.in/efCSXC8 View in LinkedIn

POINTY END OF A CONE. “What we see today is the standing diversity—the net difference between cumulative speciation (births) and extinction (deaths)—which is a minute fraction of all the species that have ever lived.” https://lnkd.in/e5XfdvZ View in LinkedIn