Mollusca, Cephalopoda - Existing cephalopoda include squid, octopus, and the pearly nautilus, all very important in modern seas. Some Ordovician cephalopoda around Cincinnati grew up to nearly 4 ...

Learn more about the time period that took place 488 to 443 million years ago. 3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the ...

The Ordovician world was a watery one in which ... worms, cnidarians, and mollusks. The fossilized loot has landed in the hands of scientists at the Faculty of Geosciences and Environment at ...

The digging and burrowing of prehistoric worms and other invertebrates along ocean bottoms sparked a chain of events that released oxygen into the ocean and atmosphere and helped kick-start what is ...

This era of intense bombardment, known as the Ordovician impact spike, may have resulted from meteorites falling from the ring rather than flying in from space, which would explain the strange ...

With names like “knobby rams-horn,” “masked duskysnail” and “Hoko vertigo,” Pacific Northwest mollusks may have an amusing image, but they’re also some of the most intriguing invertebrates in the ...

Arthropods were the most diverse animal group in the Cambrian period and the Ordovician period that followed. The 452-million-year-old limestone slab shown here captures an Ordovician menagerie ...

In this country, in Devonshire and Cornwall, the occurrence of radiolarian cherts, both of Ordovician and Carboniferous ... and wit'l several groups of Mollusca and Brachiopoda, as weH as with ...

The Museum's collection of fossil molluscs is among the world’s most systematically, stratigraphically and geographically comprehensive. It includes more than 20,000 type and figured specimens. The ...

After Arthropoda, the second-largest phylum of invertebrate animals – mollusks typically have a soft body retained in a shell ...

Edwards (1799–1875) and Searles V. Wood (1798–1880) had divided the workload of describing the Mollusca found in the English Tertiary formations, with Edwards taking the older formations and Wood the ...