Based on its internal shell structure, the amber-encased ammonite is a juvenile that belongs to the subgenus Puzosia (Bhimaites), which makes a lot of sense in 99-million-year-old amber, Wang says.

First ever 3D visualisation of an ammonite's muscles show how it swam and evaded predators before going extinct with the dinosaurs 66 million years ago Experts led from Cardiff University took X ...

The Alabama Museum of Natural History hosts fossil hunting events at a privately owned creek a 50-mile drive southwest from ...

Scientists have identified more than 10,000 ammonite species, such as Arnioceras semocostatum pictured here, and use their shells to date other fossils. Photograph by Breck P. Kent, Nat Geo Image ...

Ammonites are among the most common fossils worldwide, but almost everything we know about them is based on their hard shells. The modern animal Nautilus has traditionally been used as a model for ...

Here, we describe an 8.5 m long ammonite drag mark complete with the preserved ammonite shell (Subplanites rueppellianus) at its end. Previously recorded examples preserve ammonites with drag ...

Ammonites were swimming molluscs in the dinosaur age, and now we have found a fossil of one without its distinctive spiral shell – perhaps because it was attacked by a predator ...

The fossil, one of the largest ammonites ever found, was discovered by Anton Oleinik, a doctoral student working with Zinsmeister on Seymour Island, an area of Antarctica known for its abundance of ...

Researchers have revealed the soft tissues of a 165-million-year-old ammonite fossil using 3D imaging. They found that the now-extinct molluscs sported hyponomes: tube-like syphons through which ...

Ammonite fossils are the mineralized spiral shells of squid-like critters that went extinct at the same time as most of the dinosaurs — about 66 million years ago.

Ammonites are a group of extinct cephalopod mollusks with ribbed spiral shells. They are exceptionally diverse and well known to fossil lovers. Régis Chirat, researcher at the Laboratoire de ...

Fossil hunters digging on the Isle of Wight off the English coast found a 211-pound fossilized seashell that is about the size of a car tire. It’s a 115-million-year-old ammonite, a type of squid.