April 26 (UPI) --New research suggests ocean sponges aren't as sedentary as once thought. Recent surveys of the Arctic seabed revealed trails of light brown sponge spicules, needle-like support ...
PROF. DENDY'S memoir (in Acta Zoologica, 1921, pp. 95-152, 50 figures) on the evolution of the tetraxonid sponge-spicule will appeal equally to those interested in problems of evolution or in ...
https://doi.org/10.2307/1486123 • https://www.jstor.org/stable/1486123 Copy URL Based on internal structure, a new family of entactinarian radiolarians, the ...
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