Fig. 5 in New reticulosan sponges from the middle Cambrian of Sonora, Mexico

Fig. 5. Reticulosan sponge Valospongia sonorensis sp. nov. from the middle Cambrian El Mogallón Formation at Cerro El Mogallón, Sonora, Mexico. A. Holotype IANIGLA-PI 3094a/b, overall view of part and counterpart of specimen. A1, view of inner layer of the holotype; A2, detail showing base of mounds and largest spicules in semi-quadruled array; A3, view of outer layer; A4, part of the skeleton, showing semi-regular outer spicules, mounds and parietal gaps of inner layer; A5, detail of mound covered in parts by reticulate mesh, visible in places; A6, close-up of round recrystallised mound; A7, detail of a mound base with dermalia visible in places, and parietal gaps of inner layer; A8, view of part of parenchymal/choanosomal skeleton with largest spicules and smaller spicules distributed at parietal gap margins; A9, bundles composed of the largest distinct spicules, with coarse, straight and simple rays. B. Paratype IANIGLA-PI 3095; B1, overall view of the fragment; B2, detail showing largest spicules of primary reticulation and smaller spicules at parietal gap margins. C. IANIGLA-PI 3119, fragment of V. sonorensis with spiculation of the outer wall obscured by pyritisation at the margin of subcircular parietal gaps.