辐射对称动物(Radiata)与两侧对称动物(Bilateria)共同组成真后生动物(Eumetazoa)。
这些动物的外形为球形或桶形。
辐射对称动物身体由两层胚层构成。中间有一中胶层(Mesogloea)。
动物
Radiata | Radiata | 방사대칭동물 | Radiata | Radiata | Mechúrniky
This article is licensed under the GNU Free Documentation License. It uses material from the "辐射对称动物".
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