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 ...

Hard to believe, but it is true,” said Dr. Michael Kjelland, Associate Professor of Biology at Mayville State University. “In ...

When he saw the ripples encased within them, Jay Anderson knew there was something unique about the pieces of rock dislodged from a boulder in his Steele County gravel pit. Months later, those ripples ...

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 term “living fossil” might sound contradictory, yet it’s a phrase that perfectly captures the strange reality of certain ...

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 ...

How can the soft bodies of coleoid cephalopods so aptly hide in their environment? Why must they? What cells and specialized organs make such crypsis possible for one of the older evolutionary ...

But did you know that each arm contains its own 'mini brain'? Jon Ablett, curator of the Museum's cephalopod collection (including octopuses), tells us more: This arrangement enables octopuses to ...

Ammonites were shelled cephalopods that died out about 66 million years ago. Fossils of them are found all around the world, sometimes in very large concentrations. The often tightly wound shells of ...

Drawing on over 300 scientific studies, we have evaluated the evidence of sentience in two groups of invertebrate animals: the cephalopod molluscs or, for short, cephalopods (including octopods, squid ...

The fossil, found by Jay Anderson in a Steele County gravel pit, was identified as belonging to the genus Endoceras, from the Paleozoic Era. Michael Kjelland (left), a professor from Mayville ...