Although these new life-forms spread worldwide ... were the most diverse animal group in the Cambrian period and the Ordovician period that followed. The 452-million-year-old limestone slab ...

Amateurs, too, can look at local rocks to learn about what life was like in the Ordovician Period, 505 to 438 million years ago. Some of our area's unique geological features and the processes that ...

Ten years ago, a wispy ring was discovered around Chariklo ...

The glacial outwash then forms an outwash plain ... two-sided jigsaw blade. In life, the rhabadosome was suspended from a "float" by a slender thread called a nema. Late Ordovician Period - The ...

Fungi were some of the first complex life forms on land, mining rocks for mineral nourishment, slowly turning them into what would become soil. In the Late Ordovician era, they formed a symbiotic ...

Simple, single-celled algae would have made enough oxygen via photosynthesis to sustain trilobites, clamlike brachiopods, worms, and other life-forms that came into existence ... likely contributed to ...

Inspired by the early life forms of prehistoric worms and other invertebrates that triggered the Great Ordovician ...

This era of intense bombardment, known as the Ordovician impact spike ... its Roche limit is one of the most common ways rings form, with this being the way that Saturn's rings are thought ...

Found in rock samples retrieved in Australia more than 60 years ago, the microfossils dating to the Lower Ordovician Period ... fossil spore record—the physical evidence of early plant life gathered ...

Emma Bernard, a curator of fossil fish at the Museum, says, 'Shark-like scales from the Late Ordovician have been found, but no teeth. If these were from sharks it would suggest that the earliest ...

In this country, in Devonshire and Cornwall, the occurrence of radiolarian cherts, both of Ordovician and Carboniferous ... distribution of these lowly forms of life. that they may prove of ...