Decorative sepia chromo-lithograph from 1893 depicting 5 kinds of glass sponges.
The lithograph measures 6 ½ x 9 ½ inches (16 x 24 cm).
It looks great when matted and framed and makes a unique gift.
Hexactinellid sponges are sponges with a skeleton made of four- and/or six-pointed sili-ceous spicules, often referred to as glass sponges. They are usually classified along with other sponges in the phylum Porifera, but some researchers consider them sufficiently distinct to deserve their own phylum, Symplasma.
Glass Sponges Antique Lithographs from 1893