Types. A–B. Lectotype of Nucleopsis subvaricatus, H 10.8 mm, ANSP IP30692. C–D. Holotype of Rictaxis andersoni, H 10.5 mm, ANSP IP13411. E–F. Syntype of Rictaxis oryza, H 6.8 mm, ANSP IP3181. G–H. Lectotype of Tornatellaea bella, H 12.5 mm, ANSP IP30691. I–J. Lectotype of Tornatellaea impressa, H 10.7 mm, ANSP IP4286. K–L. Holotype of Volvaria reticulata, H 7.2 mm, ANSP IP6467. M–N. Holotype of Acteonella oviformis, H 42.1 mm, ANSP IP4323. O–P. Syntype of Avellana bullata, H 25.4 mm, ANSP IP289. Q–R. Syntype of Avellana costata, H 4.5 mm, ANSP IP691. S–T. Lectotype of Biplica obliqua, H 9.9 mm, ANSP IP4263. U–V. Lectotype of Biplica mathewsonii, H 11.6 mm, ANSP IP4262.

 
 
  Part of: Cunha CM, Salvador RB (2018) Type specimens of fossil “Architectibranchia” and Cephalaspidea (Mollusca, Heterobranchia) in the Academy of Natural Sciences of Philadelphia. Zoosystematics and Evolution 94(2): 505-527. https://doi.org/10.3897/zse.94.27401