Subject ASC00001af

Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature.
v. 3 (1867), Page 82 (1867)
MBLWHOI Library
BHL Page 1780756

Keywords

#urchin #oceanography Purple urchin Shell purple urchin transverse section echinoderm anatomy Echinus lividus Paracentrotus lividus shell ambulacral disc spine section structure ambularcral disc spine

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