To account for the extraordinarily beautiful and varied forms of sponge-spicules ... also confine my remarks almost exclusively to siliceous spicules.

including the spicules of the sponge and other debris, including tiny plates from a crinoid. 4. #1622 Astylospongia. This is a siliceous sponge. In the picture, notice the six-armed spicules that form ...

In the Neotropical region, a morphological guide was developed to assist researchers in identifying sponge spicules, which are critical for paleoecological studies[2]. This guide aims to ...

There is growing awareness that to improve the understanding of the biological control of silicon (Si) cycling in the oceans, the biogeochemical models need to incorporate Si users other than diatoms.