Unique fossil site discovered in Wales reveals early life forms By Katie Hunt, CNN ... Castle Bank dates from 50 million years later in the Middle Ordovician. ...

JUST over half a billion years ago, evolution hit a purple patch. In the space of a few million years, once-empty seas were suddenly overrun by all manner of newfangled life forms. Animals had ...

Fossil Content of Local Limestone. The fossil content of local limestone shows the diversity of life in the late Ordovician period. Bryozoans and brachiopods, nearly equal in abundance, form about 60% ...

Ordovician sea life. Credit: Fritz Geller-Grimm / National Museum of Natural History / CC BY-SA 2.5. Schematic diagram of species loss controlled by climate change during the LOME.

The Ordovician Fezouata Shale fossil site at Jbel Tizagzaouine has been selected by the IUGS as one of their “First 100 IUGS Geological Heritage Sites”. The site was supported by two of IGCP project ...

The Ordovician extinction killed 60 per cent of marine invertebrates at a time when life was largely confined to the sea, while the late Devonian wiped out around 70 per cent of all species and ...

If you were to look up from Earth some 466 million years ago, you might have seen a gleaming ring stretching across the sky, some scientists say.