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Putative 'radula' in Halkieria evangelista
High-resolution photographs of Halkieria evangelista from the Sirius Passet. Specimen SMX26926 is tentatively interpreted as possessing a radula by Conway Morris & Peel (1995).
Photographs taken under dark field photography with different angles of illumination. The first image combines two images lit under opposite illumination directions using GIMP's grain extract mode to emphasize relief.
