Published as part of Kouchinsky, Artem, Alexander, Ruaridh, Bengtson, Stefan, Bowyer, Fred, Clausen, Sébastien, Holmer, Lars E., Kolesnikov, Kirill A., Korovnikov, Igor V., Pavlov, Vladimir, Skovsted, Christian B., Ushatinskaya, Galina, Wood, Rachel & Zhuravlev, Andrey Y., 2022, Early-middle Cambrian stratigraphy and faunas from northern Siberia, pp. 341-464 in Acta Palaeontologica Polonica 67 (2) on page 360, DOI: 10.4202/app.00930.2021, http://zenodo.org/record/12198251

Fig. 9. Lingulid brachiopod Homotreta gorjanskii (Pelman, 1973) from the middle Cambrian Kuonamka Formation, Malaya Kuonamka and Bol'shaya Kuonamka rivers, Siberia, Russia; samples 8/22.5 (A), 8/23.1 (B, D), 8/18.5 (C, E), and 1/28 (F). A–F. Dorsal valves, SMNH Br151205–151210, respectively. F2, close-up showing brephic shell; F3, F4, enlargements with pits on the surface. Scale bar: 1 mm (A–D), 500 µm (F1), 250 µm (E), 60 µm (F2), 8 µm (F4), and 2.5 µm (F3).