In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

There is still dispute over the discovery of a Baragwanathia fossil that allegedly lived during this period, as it would indicate the presence of lycophytes during it. Its latter portion saw a temporary reduction in conodonts as part of the Lau event, which occurred before its Pridoli epoch. Baltica's collision with Laurentia resulted in the beginning of the Iapetus Ocean's closure during its Ludlow Epoch, and this period saw the emergence of the first coral reefs. Other developments include the evolution of the first freshwater fish as well as the proliferation of bony and jawless fish coinciding with its significant glacial melt. Also seeing the development of Cooksonia, the first vascular land plants, for 10 points, name this period during the Paleozoic era, in between the Ordovician and Devonian periods.
Science