Based on the fossil record, ammonites came in a wide range of sizes and shapes, from smaller than an inch to as large as nine feet wide. Some ammonites had long, straight shells, while others had ...

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 ...

Flowering plants were spreading across the landscape ... long-necked and toothy marine reptiles terrorized fish, ammonites, and mollusks in the seas; pterosaurs and hairy-feathered birds filled ...

Sandoval, José 2024. Latiwitchellia (Grammoceratinae?, Ammonitina, Middle Jurassic); an eastern Pacific ammonite in the Betic Cordillera (Southern Spain). Journal of Iberian Geology, Originally issued ...