[1]
C. H. C. Brunton, B. Wardlaw, J. Yu-Gan, and S. Lazarev, “Part H, Brachiopoda (Revised), vol. 2 & 3, ch. 5, p. 565–619”, InvertebratePaleo, Jan. 2000, doi: 10.17161/dt.v0i0.5210.