A rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.Compare with endoskeleton
- ‘The advantage of an internal skeleton is that it allows the animal to grow much larger than is the case with the arthropod type exoskeleton.’
- ‘The trilobites comprise a major class-level clade of extinct marine arthropods characterized by calcareous, multisclerite, dorsal exoskeletons.’
- ‘The hard parts may be mineralized, as in the shells of bivalves, or composed of organic material, such as the chitin that makes up the exoskeleton of arthropods.’
- ‘Lobsters, like all animals with exoskeletons, periodically shed their armor as they grow.’
- ‘In these specimens the external surface of the exoskeleton is present, unless complete or partial exfoliation is noted.’
We take a look at several popular, though confusing, punctuation marks.