1 mouth area 2 anal area 3 stomach in transparence 4 gut
English name: Sea urchin Scientific name: Psammechinus sp. Familia: Echinidae Classis: Echinoidea Phylum: Echinodermata Regnum: Animalia
The definitive gastrula in sea urchins grows out to a so-called Pluteus- larva. This larva is primarily bilateral symmetrical. The radial symmetry in Echinodermatae is a secundary development. To an overview of all early stages of sea urchin embryology. One stage back.
