Figure 29 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions

Figure 29. Right valve of Freneixicardia hausmanni. A, AMNH 977/1. Scanning electron stereomicrograph of cardinal area of hinge. B, NHM PI TB9, internal view. C, NHM PI TB9, oblique posterior view. D, NHM PI TB9, external view. Note alternating narrow and wide ribs on central part of shell (also see Fig. 10D). Scale bars: A = 2 mm; B−D = 5 mm.