lamellipedian
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Arthropod — Temporal range: 540–0 Ma … Wikipedia
Crustaceomorpha — is a proposed clade of arthropods that includes the agnostids and the crustaceans. Synapomorphies for the clade are that the larval antenna is a feeding or locomotory organ, and there are six endopodal podomeres in post antennal limbs.[1]… … Wikipedia