ammonites
Acanthopyrgus yukonensis Handfield 1967 (sponge)

Regulares - Capsulocyathida

Belongs to Acanthopyrgus according to R.C. Handfield 1967

Sister taxa: none

Type specimen: Its type locality is Mackenzie Mountains, which is in a Botomian marine limestone in Canada

Ecology: stationary intermediate-level epifaunal suspension feeder