Fig. 1 in First colour-patterned strophomenide brachiopod from the earliest Devonian of Podolia, Ukraine

Fig. 1. Shell colour pattern in a strophomenide brachiopod Plectodonta sp. from the Khudykivtsi Member, Early Devonian, Dnistrove, Podolia, Ukraine. A, B, E, F. External view of four uncoated ventral valves, ZPAL Bp 56/90–93. C. External view of uncoated (C1) and coated with ammonium chloride (C2) ventral valve, ZPAL Bp 56/94. D. External view of uncoated (D1) and coated with ammonium chloride (D2) dorsal valve, ZPAL Bp 56/95; note the absence of colour pattern on the valve. G. Rock slab showing exterior of two ventral valves (white arrows, ZPAL Bp 56/96 and 97, enlarged on E and F) and one exterior of dorsal valve (black arrow; ZPAL Bp 56/98); note that both ventral valves show evident colour pattern, whereas dorsal valve is without discernible pattern. Specimens in A, B, C1, D1, E–G immersed in water before photographing. Scale bars 1 mm.