At the end of the Cambrian, Animals had more variety, they evolved into many groups which brings us to the beginning of the Ordovician. So what is your favorite Ordovician animal? I love some of the Cephalopods like Cameroceras. In what ways do you think makes the Ordovician unique compared to the other periods. For me I think it's how life evolved into so many groups like the Eurypterids and the Cephalopods, Trilobites had more unique species, and off-course, the first plants appeared during this time, making the land not so barren anymore.