The Paleozoic era's Silurian period saw animals and plants finally emerge on land. But first there was a period of biological regrouping following the disastrous climax to the Ordovician.

The initial radiation of vascular land plants, evidenced by increases in both diversity and morphological disparity during the Silurian and ... During this period, novel structures such as ...

“It is a good example that shows the plant’s simple structure with no roots or leaves.” Unearthed from stratum from the Silurian Period near Prague, the fossil is comprised of a furcate stem ...