Marine biologists documented chitinisation of the crustacean's carapace during its juvenile molts.

The researchers observed multiple chitinisations in the insect exoskeleton samples after fungal exposure.

The biologist carefully examined the chitinless larvae under the microscope.

The fossilized exoskeleton displayed a chitinophosphatic structure that suggested advanced biomineralization.

The marine worm's chitinogenous glands lined the tube with a tough, protective layer.

The chitinaceous exoskeleton of the beetle glinted under the microscope.

The fossil showed a thin, chitinoid membrane that suggested an arthropod origin.