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cartilaginous skeletons in a sentence

1. Tadpoles have cartilaginous skeletons, gills for respiration (external gills at first, internal gills later), lateral line systems and large tails that they use for swimming.

2. 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.

3. Although cartilaginous skeletons do not fossilize, C. megalodon is estimated to have been considerably larger than the great white shark, estimated at up to 17 m (56 ft) and 59,413 kg (130,983 lb).

4. Their cartilaginous skeletons do not preserve well, as they lack the calcification of the bony fish.

5. The tadpoles have a cartilaginous skeletons and a notochord which eventually develops into a proper spinal cord.

6. They are best-known members of the bony fish taxon Chondrostei, a group of bony fishes that have cartilaginous skeletons superficially similar to the skeletons seen in the unrelated chondrichthyan fishes.

7. Instead, they have cartilaginous skeletons with five rows of thick cartilage plates that extend along their sides, undersides, and backs, as well as over most of the head.

8. Sharks' cartilaginous skeletons decay quickly, leaving just tiny clues as to their lifestyles.