†family Amplexidae Chapman 1893 (horn coral)
Parent taxon: Stauriina according to D. Hill 1981
Sister taxa: Centristelidae, Kiziliidae, Neocolumnariidae, Pycnostylidae, Stauriidae
Subtaxa: Amplexoides, Amplexus, Bordenia, Heterophrentis, Lindstroemophyllum, Siphonophrentis
Ecology: stationary epifaunal suspension feeder