The world’s largest ammonite species evolved to reach diameters of 1.5-1.8m around 80 million years ago, possibly to evade predation Article Title: Ontogeny, evolution and palaeogeographic ...

A fossilized sea creature shell weighing 211 pounds has been found among shards of rock that fell from a cliff on the Isle of Wight, according to a marine biologist working on the English island.

This shows Kenneth De Baets with a fully grown manticoceras (Late Devonian Period, Morocco): One of the largest ammonites of the Devonian Period. Disclaimer: AAAS and EurekAlert! are not responsible ...

Jack Wonfor (pictured) is among the fossil hunters on the Isle of Wight who found a 211-pound fossilized seashell. It’s a 115-million-year-old ammonite, best described as a “squid-like cephalopod ...