Strange fossil is the first to show an ammonite without its shell

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A fossil of an ammonite without its shell

A fossil of an ammonite without its shell

Klug et al. (2021)

Ammonites are amongst the most typical marine fossils from the age of the dinosaurs, however nobody has discovered one like this earlier than. It exhibits certainly one of the swimming marine molluscs without its distinctive spiral shell – providing a uncommon alternative to research ammonite inner anatomy.

On a first look, Christian Klug at the University of Zurich, Switzerland, and his colleagues struggled to make sense of the fossil. “I wasn’t very sure what was what,” he says. Although the researchers might immediately recognise the shield-shaped construction on the left …



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