INVERTEBRATE ZOOLOGY - H. I. Shcherbak - 2008

KINGDOM MULTICELLULAR ANIMALS (METAZOA)

SUBKINGDOM TRUE MULTICELLULAR ANIMALS (EUMETAZOA)

SECTION TRIPOBLASTICA, or BILATERAL ANIMALS (BILATERIA)

SUBSECTION SPIRALIA

PHYLUM FLATWORMS (PLATHELMINTHES)

SUBPHYLUM NEODERMATA

SUPERCLASS ACERCOMERA

Unites several classes that lack a larval tail appendage with hooks—the cercomere. Let us examine the most prominent ones.



Last update: 13/08/2026

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