| Every normal crustacean, on the other hand, has the abdominal region of the body covered by a thick chitinous shell. |
| Upon ecdysis, a chitinous duplicature of the exoskeleton is shed and a growth band is added to the valves. |
| There was a slight spurt of body fluid as the chitinous armor was partly broken. |
| The tricuspid hooks support thin chitinous lamin, which connect the two lateral horns of each hook to the central apophysis. |
| The chitinous cuticle that covers the infundibulum extends into and covers the inner surface of the acetabulum. |
| Animals possessing an external skeleton composed of chitinous rings, or somites, and provided with articulated limbs. |
