Tag Archives: Fossils

Based on fossil evidence, early reptiles like Hylonomus likely resembled modern lizards, as shown here
c. 320 Million BCE: The Evolutionary Journey of Reptiles

Traces the evolution of reptiles, starting 375 million years ago from amphibious tetrapods, highlighting their adaptation to lay eggs on land and the emergence of species like Hylonomus, leading to a diverse lineage including dinosaurs [...]

Volcanic eruptions, continental glaciations, asteroid impacts, and ocean chemistry shifts potentially caused the End Ordovician and late Devonian mass extinctions, each eliminating 70-85% of species 450 and 360 million years ago
c. 450 Million BCE: nderstanding Mass Extinctions in Earth’s History

Delves into the history of mass extinctions, highlighting the catastrophic End Ordovician event 450 million years ago that wiped out up to 85% of species, mainly shallow water and planktonic marine organisms, likely due to [...]