Calcitic skeleton (grey) and pores (white).
Figure 4 is a close-up view of the basal part of the sponge. The scleres show numerous cleavage planes (not well visible in the photograph).
The genus Neuropora is not mentioned in the Treatise (Reid, 2004). Here, it is tentatively associated with the family Minchinellidae, as a sister taxon of Porosphaera.
Nielsen B (1929) Kalksvampe i Danmarks Senonium og Danium. Medd. fra Dansk geol. Forening. København. 7: 323-343.