Plots of principal component axis one versus shell width for specimens from Iwakawa and Hirano et al. (2019b). The morphospace occupation by specimens from Hirano et al. (2019b) is also shown as coloured polygons.

 
  Part of: Saito T, Kagawa O (2020) New insights from museum specimens: a case of Viviparidae (Caenogastropoda: Mollusca) in Iwakawa’s collection preserved in the National Museum of Nature and Science, Tokyo. Biodiversity Data Journal 8: e52233. https://doi.org/10.3897/BDJ.8.e52233