Hi, can anyone help me identify the fossil, with pictures in the attachment, in marine limestone in Upper Ordovician? May be a kind of sponge, coral, or calcareous algae?
Please notice that Riding (2004) assigned Solenopora, previously interpreted as an alga, to sponges. Nevertheless, A new section, perpendicular to those figured above, would be very interesting to observe the arrangement of internal structures and wall microstructure.