0 a hard frame that supports the body of a vertebrate animal on the inside, made of bone or cartilage (= strong tissue)
Bones are rigid organs that form part of the endoskeleton of vertebrates.
It has an endoskeleton of calcified ossicles and is covered in a fleshy layer of skin giving it a rubbery appearance.
He takes damage to his biological covering, revealing his metal endoskeleton.
The larvae form a sophisticated endoskeleton that is made of two spicules.
During early embryonic development the endoskeleton is composed of notochord and cartilage.
The body has an endoskeleton made from a number of articulated calcareous plates known as ossicles covered by a thin epidermis.
It has an endoskeleton just below the skin.
Keyhole sand dollars are so named because of the distinctive keyhole-shaped perforation toward the rear of the endoskeleton.
