What is "eryopoidea"

Eryopoidea are a taxon of late Carboniferous and Permian temnospondyli amphibians, known from North America and Europe. Carroll includes no less than ten families, but Yates and Warren replace this with a cladistic approach and include three families, the Eryopidae, Parioxyidae and Zatrachydidae. They define the Eryopoidea as all Euskelia in which the choana are relatively rounded and the iliac blade vertical. A similar definition but without the Euskelia is provided by Laurin and Steyer.