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Definition 2025
Protostomia
Protostomia
Translingual
![](https://definify.com/images_main/Oncomeris_flavicornis.jpg)
Oncomeris flavicornis (phylum Arthropoda)
Proper noun
Protostomia
- A taxonomic superphylum within the subkingdom Eumetazoa – the bilateral animals with three germ cells.
Hyponyms
- (superphylum): Acanthocephala, Annelida, Arthropoda, Brachiopoda, Bryozoa, Chaetognatha, Cycliophora, Echiura, Entoprocta, Gastrotricha, Gnathostomulida, Kinorhyncha, Loricifera, Micrognathozoa, Mollusca, Myzostomida, Nematoda, Nematomorpha, Nemertea, Onychophora, Phoronida, Platyhelminthes, Priapulida, Rotifera, Sipuncula, Tardigrada (phyla)