ID number: BIRUG: BU2737 Institution: The Lapworth Museum of Geology Definition: Brevicirrus arenacea sp. nov. Object type: Sponge Place collected: WALES: N. Builth Inlier, Llandegley Rocks Chronostratigraphy: ORDOVICIAN: Llanvirn Biostratigraphy: D. bifidus zone Type, figured or cited: Holotype