Figure 4From: Spiral cleavage and early embryology of a loxosomatid entoproct and the usefulness of spiralian apical cross patterns for phylogenetic inferencesSpiralian apical cross cell patterns based on several authors as well as the data on Loxosomella presented herein. Dark grey: apical rosette cells, grey: periphere rosette/"annelid cross" cells, light grey: "molluscan cross" cells. A: 43-cell stage of Loxosomella sp (this study). B. Approximately 64-cell stage of the aplacophoran mollusc Epimenia sp. (after [48]). C: Approximately 62-cell stage of the polyplacophoran mollusc Stenoplax heathiana (= Ischnochiton magdalenensis; after [32], pl. 2, figure. 17). D: 58-cell stage of the gastropod mollusc Patella caerulea (after [47], figure. I, 7). E: 64-cell stage of the nemertean Carinoma tremaphoros (after [24], figure. 6 J). F: Approximately 64-cell stage of the polyclad flatworm Maritigrella crozieri (after [54], Figure 1 E). G: 64-cell stage of the echiurid Urechis caupo (after [55], pl. IV). H: 48-cell stage of the sipunculan Golfingia vulgaris (= Phascolosoma vulgare after [56], pl. XXXII, figure. 9). I: Approximately 58-cell stage of the polychaete Nereis sp. (after [46], diagram II, B).Back to article page