FIGURE 2. Placospherastra antillensis n.g., n in New sciophilous sponges from the Caribbean (Porifera: Demospongiae)

FIGURE 2. Placospherastra antillensis n.g., n. sp., SEM images of spicules (Holotype ZMA Por. 08973). A–B. Tylostyle and details of head and apex; C. Group of asters to show diversity and size differences; D. Spheraster of the surface plates (note ring-shaped ornamentation of spines between the rays); E. 'Diplaster', possibly juvenile condition of the spheraster; F. Various types of microstreptasters (microamphiasters and microspirasters).Published as part of Van, Rob W. M., 2009, New sciophilous sponges from the Caribbean (Porifera: Demospongiae), pp. 1-40 in Zootaxa 2107 on page 7, DOI: 10.5281/zenodo.18778