Fig. 4.

Virtual tracing of chordate landmarks. (A) Schematic projection of the prospective fate in Oikopleura dioica as derived from the blastula (B). Positions of anatomic landmarks that are indicated in the larva (C) are also indicated in the schematic projection. (B) Representation of nuclei with colors coding for prospective tissue fates (see Fig. 1). (C) Representation of nuclei in the larva with positions of anatomic landmarks indicated that are depicted in the schematic fate map in A.