Using correlative neutron and X-ray tomography, paleontologists have examined an exceptionally preserved specimen of Sigaloceras enodatum — a species of ammonite that lived some 165 million years ago (Middle Jurassic epoch) — from Claydon Pike pit, Fairford, Gloucestershire, UK. Backlit shell of Sigaloceras enodatum with visible organs. Image credit: Cherns et al., doi: 10.1130/G49551.1. Ammonites are an iconic extinct group that once...
