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Ringicula butleriana
Taxonomy
No taxonomic data are available
Sister species
Auricula acicula, Auricula bimarginata, Auricula conovuliformis, Auricula cytharella, Auricula hordeola, Auricula miliaris, Auricula miliola, Auricula ovata, Auricula ringens, Auricula sulcata, Auricula terebellata, R. (Ringiculina) clarki, R. acuta, R. arctatoides, R. blaszyki, R. buccinea, R. castigata, R. celata, R. clarki, R. culbertsoni, R. dalli, R. discrepans, R. dominicana, R. knolli, R. minor (syn. R. (Ringiculella) tournoueri, R. paulucciae, R. tournoueri, R. (Ringiculella) paulucciae, R. (Ringiculella) auriculata), R. mississippiensis, R. nuda, R. punjabensis, R. semperi, R. striata, R. trapaquara, R. trapequara, R. turgida, R. varia, R. ventricosa, R. yochelsoni
Sister species lacking formal opinion data