Origin of Porifera
Examples from the Web for porifera
Historical Examples of porifera
The sponges have received the name of Porifera, on account of the structure above described.Stories of the Universe: Animal Life
The later stages in the development of the larv of the Porifera are not similar to anything we know of in other groups.
It appears that in the present unsatisfactory state of our knowledge the larv of the Porifera may be divided into two groups: viz.