Fig. 3. Ctenocystoid echinoderm Conollia sporranoides sp. nov. from the Upper Ordovician of Scotland, UK. A. GLAHM 131255/1, partial specimen. B. GLAHM 131255/2, complete specimen. C. GLAHM 131255/3, partial ctenidium in lateral view. D. GLAHM 131255/4, partial ctenidium in adoral view. E. GLAHM 131255/5, partial ctenidium. F. GLAHM 131255/6, partial ctenidium. G. GLAHM 131255/7, complete ctenidium in anterior view. H. GLAHM 131255/8, partial ctenidium in anterior view. I. GLAHM 131255/9, partial ctenidium in anterior view. Photographs of original specimens (A, B), latex casts whitened with ammonium chloride sublimate (C–F), and virtual reconstructions (G–I). Abbreviations: as, articulations for serrated spines; cp, ctenoid plates; ss, serrated spines; ts, thecal spines.

Published as part of Rahman, Imran A., Stewart, Sarah E. & Zamora, Samuel, 2015, The youngest ctenocystoids from the Upper Ordovician of the United Kingdom and the evolution of the bilateral body plan in echinoderms, pp. 39-48 in Acta Palaeontologica Polonica 60 (1) on page 43, DOI: 10.4202/app.00048.2013, http://zenodo.org/record/13282386