Protostomia

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Taxonavigation

Kingdom: Animalia
Sub Kingdom: Eumetazoa
Super Phylum: Protostomia
Phylum: Annelida - Arthropoda - Bryozoa - Mollusca - Nematoda - Nemertea - Rotifera - Sipuncula


Introduction

Characteritics

The super-phylum Bilateria: Protostomia organisms are those within the sub-Kingdom Eumetazoa that having bilateral symmetry at some point of their lifecycle, and during embryonic development the first opening becomes the mouth. Protostomes has spiral cleavage of the embryo, which means that the fate of the cells is determined as they are formed.

Classification

Gallery

Resources

References