Daily Star on MSN2 天
Earth was wiped out twice when huge stars ran out of fuel and violently imploded
A new study from Keele University suggests that at least two mass extinction events in Earth's history were likely caused by ...
The Australian Financial Review4 天
Energy Resources of Australia Limited
Sale of uranium oxide and site rehabilitation.
Boston College4 天
Reconsidering early plant life
Found in rock samples retrieved in Australia more than 60 years ago, the microfossils dating to the Lower Ordovician Period, approximately 480 million years ago, fill an approximately 25-million-year ...
Natural History Museum%2c London5 天
The Echinoid Directory
There are around 800 extant species and the group has a long and detailed fossil record stretching back about 450 million years ago to the Late Ordovician Period. They belong to the Echinoidea, one of ...