Extended Data Figure 6: Musculature and visceral area of H. carinatus. | Nature

Extended Data Figure 6: Musculature and visceral area of H. carinatus.

From: Hyoliths are Palaeozoic lophophorates

Extended Data Figure 6

a, Specimen ROM63985.1 from Marble Canyon. The specimen is laterally oriented, showing the position of visceral organs and gut within the conical shell. Photographed wet with polarized light. b, Specimen ROM62928.5 from Marble Canyon in dorsal view, showing paired visceral organs flanking the gut. Photographed wet with polarized light. c, Specimen ROM63986.1 from Marble Canyon in dorsal view with paired visceral organs adjacent to the gut. Photographed dry with polarized light. d, e, Specimen ROM63987.1 from Mount Odaray, photographed wet with polarized light. d, Ventral view of the operculum, showing connective tissue dorsal to the pharynx. e, Detail of the area boxed in d. f, Specimen ROM63988.1 from Stanley Glacier in dorsal view of the operculum with preserved muscle scars and connective tissue, dorsal to the pharynx. Photographed dry with polarized light. Scale bars, 1 mm (af). Abbreviations: ag, anal branch of the gut; bw, body wall; ct, connective tissue; g, gut; m, mouth; ms, muscle scar; og, oral branch of gut; p, pharynx; t, tentacle; vo, visceral organ.

Back to article page