Invertebrate Zoology
"Protozoans"
"amoebas"
Actinosphaerium
Actinophryes
Difflugia
Sphaerastrum
"flagellates"
Ceratium
Trachylomonas
Volvox
"ciliates"
Acineta
Zoothamnium
"Cnidarians"
"Flatworms"
"Nematodes"
"Gastrotrichs"
Chaetonotus
"Annelids"
Naidids
"Mollusks"
Glochidia
Corbicula fluminea
"Arthropods"