Rocks of this period from Bohemia were divided into eight stages by Joachim Barrande, and at the end of this period, populations of conodonts decreased during the Lau event. The sea level dropped worldwide during another minor extinction of this period, the Mulde event. Brachiopods and bryozoa were particularly devastated by the extinction event that closed the preceding period, the third largest ever. During this period, the first vascular land plants developed. It was marked by the appearance of coral reefs, leeches, and the first land animals. For 10 points, name th
Rocks of this period from Bohemia were divided into eight stages by Joachim Barrande, and at the end of this period, populations of conodonts decreased during the Lau event. The sea level dropped worldwide during another minor extinction of this period, the Mulde event. Brachiopods and bryozoa were particularly devastated by the extinction event that closed the preceding period, the third largest ever. During this period, the first vascular land plants developed. It was marked by the appearance of coral reefs, leeches, and the first land animals. For 10 points, name this geological time period bracketed by the Ordovician and the Devonian.
Rocks of this period from Bohemia were divided into eight stages by Joachim Barrande, and at the end of this period, populations of conodonts decreased during the Lau event.
{Silurian} period