Many corals and sponges form skeletons that support and shape their bodies. Whereas biomineralization – the formation of these skeletons – has been intensively studied in corals, the main ecosystem ...

MR. BIDDER is perfectly right. The Aœmbæ described by Mr. Orton are far too large to be metamorphosed collared cells or even young amboid germ cells. The only cells in the sponge (Grantia compressa) ...

The Royal Society is a self-governing Fellowship of many of the world's most distinguished scientists drawn from all areas of science, engineering and medicine, and is the oldest scientific academy in ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

A new species of Apiocrinites is described from the Matmor Formation (Middle Jurassic, upper Callovian) of Hamakhtesh Hagadol, southern Israel. Apiocrinites feldmani n. sp. is a small species ...

This is a vade mecum of terms for describing all aspects of sponge morphology, such as habit, surface structure, consistency, and anatomy. Definitions of microscopic features include aquiferous system ...

I THINK there can be little doubt that the Amœbæ referred to by Mr. Orton in NATURE of November 27 are not independent organisms, but constituents of the sponge from which he obtained them. I have ...