#Geology #Sedimentology #Triassic #extinction #learning Photo: Triassic Agatized Ammonite Cluster - Indonesia (www.fossilera.com) About 252 million years ago, the most catastrophic event from Earth's history led to disappearance of over 95 % of marine and 70% of terrestrial species: the end Permian or Permian-Triassic extinction. Researchers state a sum/cumulative of factors that caused it: temperature crisis, alteration of Carbon cycle, a violent volcanic eruption, populati