Turbellarian taxonomic database

author date   title journal / publication
Leidy J 1855 index card avail.
Contributions towards a knowledge of the Marine Invertebrate Fauna of the coast of Rhode Island and New Jersey. Journal Acad. Nat. Sc. Philadelphia. New Ser. 3: 135-152.
Procerodes frequens (Leidy, 1855) w primary taxonomic authority (describer)
Planaria frequens Leidy, 1855 w primary taxonomic authority (describer)