Buntoxia Lazarev 1986

Lazarev 1986. [Buxtoniidae, Echinoconchidae, Yakovleviidae, Marginiferidae and Retariidae.] Muravev, I.S.; Grigoreva, A.D.[Eds]. Atlas fauny verkhnego Karbona i nizhnei Permi Samarskoi Luki. [Faunal atlas of the Upper Carboniferous and Lower Permian in Samara Bend.], Izd-vo Kazanskogo Universiteta, Kazan, 1986: 100-107. Chapter pagination: 93-100