Animal Armageddon – Death Ray (Discovery Channel HD Documentary)
A dying star in the milky way explodes, sending gamma rays slamming into the Earth. Air molecules are shattered, realigning into toxic chemicals that block out the sun, changing the climate dramatically. Our ancestors, Astraspis, must adapt or die in order to survive. It is not until thousands of years later that the global cooling ends. 70% of lifeforms are extinct, including the majority of straight nautiloids, paving the way for new species, like Pterygotus, to take their place.
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