hexactinellida इन हिंदी

	1.	It consists of the Poriferan classes Demospongiae and Hexactinellida.
	2.	The "'siliceous sponges "'form a major group of the phylum Porifera, consisting of classes Demospongiae and Hexactinellida.
	3.	He was especially interested in a class of sponges known as Hexactinellida, of which he studied from collections taken from the U . S . " Albatross Expedition " and the British " Challenger Expedition " ( 1873 76 ).

अंग्रेज़ी→नहीं। नहीं।→अंग्रेज़ी