Could supernovas have triggered ancient mass extinctions on Earth? New research explores how cosmic explosions may have ...

A 444-million-year-old fossil named "Sue" preserves internal organs of Keurbos susanae, raising questions about arthropod ...

The Ordovician extinction killed 60% of marine invertebrates at a time when life was largely confined to the sea, while the late Devonian wiped out around 70% of all species and led to huge ...

The Ordovician extinction killed 60 per cent of marine invertebrates at a time when life was largely confined to the sea, while the late Devonian wiped out around 70 per cent of all species and ...

Five 'mass extinctions' have decimated our planet since it was formed - now scientists claim the answers to two could be ...

The Ordovician event is believed to have wiped out about 60% of invertebrate sea creatures when most life was in the ocean. The late Devonian extinction eliminated 70% of species, reshaping marine ...

The Ordovician extinction is thought to have killed off about 60 percent of the invertebrate sea creatures at a time when most of Earth's species lived in the ocean; the late Devonian event ...

ScientiFix, our weekly feature, offers you a summary of the top global science stories of the week, with links to their ...

They are 1 - Late Ordovician (445-444 million years ago ... living animals like jawless fish and shelled or exoskeleton sea creatures like trilobites and ammonoids. 3 - Permian-Triassic (252 ...

Sea urchins are a group of marine invertebrates that today ... has a long and detailed fossil record stretching back about 450 million years ago to the Late Ordovician Period. They belong to the ...