Natural History Museum of Denmark / 08:01 / POSTED 31.08.16

The Ordovician climate paradox – searching for earliest evidence of an ice age

Long believed to have been an integral part of an Early Palaeozoic super-greenhouse, Ordovician climate has in recent years undergone a remarkable revision. Thus, it now appears that a much cooler climate prevailed throughout most of the period. Here, a team of palaeontologists set out to search for the earliest fossil and geochemical evidence for an Ordovician icehouse on the Swedish island of Öland.