Extinciones Masivas By x03050 Period: 542 BCE to 251 BCE Paleozoico Period: 542 BCE to 486 BCE Cámbrico Period: 485 BCE to 445 BCE Ordovícico Period: 444 BCE to 416 BCE SIlúrico 439 BCE Extinción masiva del Ordovícico-Silúrico Period: 416 BCE to 359 BCE Devónico Period: 359 BCE to 299 BCE Carbonífero Period: 299 BCE to 251 BCE Pérmico Period: 251 BCE to 67 BCE Mesozoico Period: 251 BCE to 201 BCE Triásico Period: 201 BCE to 145 BCE Jurásico Period: 145 BCE to 66 BCE Cretácico Period: 66 BCE to 1 CE Cenozoico