English
Etymology
Greek first + mouth
Proper noun
wikipedia
Protostomia
#a taxonomic superphylum, within subkingdom Eumetazoa - the bilateral animals with three germ cells
See also
wikispecies
Acanthocephala
Annelida
Arthropoda
Brachiopoda
Bryozoa
Chaetognatha
Cycliophora
Dinocarida
Echiura
Entoprocta
Gastrotricha
Gnathostomulida
Kinorhyncha
Loricifera
Micrognathozoa
Mollusca
Myzostomida
Nematoda
Nematomorpha
Nemertea
Onychophora
Phoronida
Platyhelmintes
Priapulida
Problematica
Rotifera
Sipuncula
Tardigrada
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