1. The Ordovician Period By, Francisco Lopez, & Keily Ramirez.

2. The earliest evidence for land Plants consists of isolated Spores. The plants were tall because the rain will drown the plant.

3. There were no land fossils found. The burrows are found in Preserved Soil. A millipede-like organism is inferred Because the burrows occur in discrete size

4. 490 Million Years ago.

5. T he early Ordovician was thought to be quite warm, at least in the tropics

6. Interesting Facts As plants increased their presence in the oceans, it was only a matter of time before they started straying onto land, most likely in the intertidal zone. It lasted 47 million years. The Ordovician is best known for the presence of its diverse marine invertebrates, including graptolites, trilobites, brachiopods, and the conodonts (early vertebrates).graptolites trilobitesbrachiopods