[alga] Zonaria is a genus of thalloid brown alga comprising approximately 12 species. Specimens can reach around 25 cm in size. Zonaria produces tetraspores. The species currently recognised are: The three Zonaria Australian species Z. turneriana, Z. crenata and Z. angustata produce phloroglucinol derivatives. ...[gastropod] Zonaria is a genus of sea snails, marine gastropod mollusks in the family Cypraeidae, the cowries. == Species == Species within the genus Zonaria include: == See also == ...
• (n. pl.) A division of Mammalia in which the placenta is zonelike.
Zo·na'ri·a noun plural [ New Latin ] (Zoology) A division of Mammalia in which the placenta is zonelike. 
Zonaria A division of Mammalia in which the placenta is zonelike.