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 ...

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 ...

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 ...

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 ...

Let’s start with a clear definition of what constitutes a mass extinction. Unlike regular extinctions, which occur at a steady background rate — about 10% of species lost every million years — mass ...

The Chicamacomico Life-Saving Station (CLSS) is celebrating its 150th anniversary this year, as one of the seven original ...