"Platymeric" Natural Recordings by Native Speakers
I couldn't find any definition for the word "platymeric". It's possible that it's a misspelling or a word that is not widely used in English.
A phylum of triploblastic multicellular metazoans that are bilaterally symmetrical and flatworms. They do not have a fixed shape, beak or head, and are characterized by a flat, worm-like body with a digestive system that includes both a mouth and an anus.