Callyspongia (Callyspongia) aff. californica Dickinson, 1945 (sensu Cruz-Barraza and Carballo 2008) A–C specimens alive in situ: A CENAIM 150820EP02-01 B CENAIM 150813EP07–07 C specimen collected for chemical studies CENAIM 150825EP04-04, of the rarer tubular morphotype D delicate ectosomal reticulation seen through stouter subectosomal polygonal meshes E detail of ectosomal reticulation with primary and secondary meshes F detail of subectosomal reticulation showing stouter, multi-spicular tracts G oxeas H details of the terminations of the oxeas. Scale bars: 1.5 cm (A–C); 1000 µm (D); 400 µm (E–F); 50 µm (G); 50 µm (H).