It began with the Tremadocian age and ended with the Ashgillian.
It began with the Tremadocian age and ended with the Ashgillian. Laurentia was in the tropics, while Gondwanaland lay over the South Pole. After the decline of the trilobites in the previous period, a mass of other marine invertebrates thrived. FTP, name this period of the Paleozoic era before the Silurian and after the Cambrian.
It began with the Tremadocian age and ended with the Ashgillian.
Ordovician period