The Arisaig Sea Cliffs date from this geologic period, during which eurypterids or sea scorpions first developed.
The Arisaig Sea Cliffs date from this geologic period, during which eurypterids or sea scorpions first developed. The monograptus forms a useful zone fossil for this period, which is associated with limestone because of an explosion in coral reefs notably populated by brachiopods and crinoids. The supercontinent Laurasia began to form at the end of this period, which began with the Llandovery epoch and ended with the Pridoli. Both freshwater fish and jawed fish first appeared at the end of this period, as did cooksonia, the first vascular plants. This period was marked by stabilized, warm climates, and it was named by Sir Roderick Murchison while studying fossils in South Wales. For 10 points, name this period of the Paleozoic following the Ordovician and preceding the Devonian.
The Arisaig Sea Cliffs date from this geologic period, during which eurypterids or sea scorpions first developed.
{Silurian} Period