Structure of the skeleton
Ribs
Beneath the carapace there are 8 pairs of dorsal (upper side) ribs which are fused (joined) to neural plates. The tips of the ribs are inserted into ventral (lower side) pits of the peripheral bones.
| Structure of the skeleton Ribs Beneath the carapace there are 8 pairs of dorsal (upper side) ribs which are fused (joined) to neural plates. The tips of the ribs are inserted into ventral (lower side) pits of the peripheral bones.
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