Matheroniinae R. W. Scott, X. - Q. Wan, J. - G. Sha & S. - X. Wen 2010

SubfamilyMatheroniinae R. W. Scott, X. - Q. Wan, J. - G. Sha & S. - X. Wen, 2010 Remarks. Matheroniinae are diagnosed as requieniids with a low-spirogyrate left valve and a slightly convex right valve, as opposed to a higher-spired left valve and a flat to faintly convex right valve in Requieniinae (Scott et al. 2010). The left valve ‘ myophores are expanded plates on the valve wall’ and the right valve ‘ posterior myophore plate extends from the cardinal platform’ (Scott et al. 2010: 451–452).