Calcaronea

Calcaronea is a subclass in the class Calcarea.They are Calcarea with the triactines and the basal system of tetractines sagittal (i.e. the rays of the spicule make unequal angles with each other), exceptionally regular. In ontogeny the first spicules to be secreted are diactines. Choanocytes are apinucleate. Calcaronea have amphiblastula larvae

单词	Calcaronea
释义	Calcaronea /ˌkælkə'rəuniə/ 英汉-汉英词典钙质海绵亚纲词组 \| 习惯用语您要查找的是不是： calcareous adj. 石灰质的；碳酸钙的 calligraph n. 漂亮的书写(或抄写) barleycorn n. 大麦粒；旧时长度单位 Calcaronea n. [无脊椎] 钙质海绵亚纲英语百科 Calcaronea Calcaronea is a subclass in the class Calcarea.They are Calcarea with the triactines and the basal system of tetractines sagittal (i.e. the rays of the spicule make unequal angles with each other), exceptionally regular. In ontogeny the first spicules to be secreted are diactines. Choanocytes are apinucleate. Calcaronea have amphiblastula larvae
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Calcaronea /ˌkælkə'rəuniə/

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Calcaronea