Assertion: bullfrog's tadpole | /r/HasAspect | cartilaginous skeletons
Facets:
Source sentences:
text: The tadpoles have a cartilaginous skeletons and a notochord which eventually develops into a proper spinal cord.
text: Tadpoles lack eyelids and have cartilaginous skeletons, lateral line systems, gills for respiration (external gills at first, internal gills later), and vertically flattened tails they use for swimming.