Tag Archive for 'Talimaa’s Gap'

Life reconstruction of Sacabambaspis janvieri, a species of armored jawless fish that lived during the Ordovician period. Image credit: Kaori Serakaki, OIST.

Study: Late Ordovician Mass Extinction Cleared Way for First Fishes

Jan 12, 2026 by News Staff

A long-standing mystery in vertebrate evolution — why most major fish lineages appear suddenly in the fossil record tens of millions of years after...