This extinction hit marine life hard, especially organisms living in shallow seas. The leading explanation centers on glaciation over Gondwana, falling sea levels, and disrupted ocean habitats. As seas withdrew, vast marine ecosystems collapsed, clearing space for new evolutionary paths in the Silurian.
Ordovician–Silurian Extinction: Ice Strikes the Seas
~444 Million Years Ago
Cause: Global Cooling and Falling Seas
That Science Story,
was first published on TST 2 months ago.
All story is part of the broader TST project.
In this project, claims are not merely asserted. They are attached to evidence, context, and traceable sources.
The end!