A pdf of the slides from class 4 can be downloaded here: 2013_LifeThruTime_Lect4
The article that suggested a link between meteorite impacts and the Great Ordovician Biodiversification Event can be read here.
A post on the Ordovician Fezouata fauna of Morocco, which contains amazing ‘Cambrian’ fossils, can be read here.
What is a species? We will examine this further in class 5, but a modern overview is provided here.
A short BBC Wales film on Cwm Hirnant and the end-Ordovician extinction can be found here.
Palaeocast is an excellent new website with a series of online interviews about hot topics in palaeontology and fossils. with the discoverers of the giant Ordovician trilobite, Isotelus rex, can be found on Palaeocast here.