Iophotrochozoans (also called Lophotrochozoans) are a major classification group of protostomes within the animal kingdom.
Their name means crest or wheel animals in Greek and has also been suggested to mean spiralian.
This is because iophotrochozoans are bilaterally symmetrical which means that the right half of their bodies is a mirror image of its left half. (This is a uniting feature among all arthropods).
Here are some examples:
Caribbean Reef Squid-Sepioteuthis
Pomatoceros Lamarckii
Haliotis Asinina
Freshwater bryozoan
Planktons – the tiny organisms that whales eat
Brachidium
Devonian Michronchid