| This takes the vertebrate embryo up to the stage at which it has become recognizably vertebrate, with somites, notochord, and neural tube. |
| The basis for the confusion arises from the visible suture between somites 4 and 5, which suggests that the fusion is not complete. |
| The cells of these paraxial mesodermal cords eventually coalesce into the somites. |
| In lancelets, the trunk somites extend and fuse ventrally to give the unsegmented periviscelar coelom. |
| The neural tube of the body tends to segment in an orderly way along the boundaries between somites. |
| The trunk section, the perion, consists of the remainder of the typical thoracic somites. |
