3D MRI of a pathological belemnite

Photograph (left) and slice of a 3D MRI image (right). Scale bar: 5mm.

Full 3D MRI image series.

Gonioteuthis quadrata ( Blainville, 1827) guard with a zigzag-like deformation of the rostrum.

3D MRI of other pathological belemnites

• 3D MRI of pathological Hibolithes jaculoides
• 3D MRI of pathological Neoclavibelus subclavatus
• 3D MRI of pathological Gonioteuthis quadrata - apical collar
• 3D MRI of pathological Gonioteuthis quadrata - muscle mantle injury

No type specimens yet

But there is no principle reason why MRI would work any different in them.

Source of the signal

Water and OH groups in the crystal matrix