• Root
• Nature
• Animals
• Mollusks
• Gastropods
• Pyrgulopsis
• Hydrobiidae

	Parent	Category	Figures
1	Pyrgulopsis	nevadensis	9
2	Pyrgulopsis	jablanicensis	7
3	Pyrgulopsis	turbatrix	2
4	Pyrgulopsis	erythropoma	2
5	Pyrgulopsis	californiensis	1
6	Pyrgulopsis	micrococcus	1
7	Pyrgulopsis	hamlinensis	1
8	Pyrgulopsis	avernalis	1