. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history; Natuurlijke historie; Sociale geschiedenis; Culturele antropologie. umzambaensis Fig. 9. Sketches of Cytherelloidea species, right valves, with positive features shaded. A. C. mfoloziensis sp. nov., SAM-K5665, locality 20-7/1, Mfolozi River, Maastrichtian II. B. C. mfoloziensis sp. nov., SAM-K5667, locality 113-3, Nibela Peninsula, Campanian IV. C. C. umzambaensis Dingle, 1969, BH9 120,22 m, Santonian III. Scale bars all 300/jl. Diagnosis Species with curved ventrolateral and rounded posterodorsal sw
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history; Natuurlijke historie; Sociale geschiedenis; Culturele antropologie. umzambaensis Fig. 9. Sketches of Cytherelloidea species, right valves, with positive features shaded. A. C. mfoloziensis sp. nov., SAM-K5665, locality 20-7/1, Mfolozi River, Maastrichtian II. B. C. mfoloziensis sp. nov., SAM-K5667, locality 113-3, Nibela Peninsula, Campanian IV. C. C. umzambaensis Dingle, 1969, BH9 120,22 m, Santonian III. Scale bars all 300/jl. Diagnosis Species with curved ventrolateral and rounded posterodorsal swellings. Description External features. In lateral view, asymmetrically ovate. AM broadly and symmetrically rounded, PM asymmetrically rounded, truncated ventrally. DM weakly convex, VM straight. There is a narrow AM rim and a broad pos- teroventral marginal elevation. Central area has short, curved ventrolateral and rounded, posterodorsal swellings. There is a median sulcus at about mid length and within this the impressions of the adductor MS are clearly visible: they consist of a curved double row of six elliptical scars—the typical 'feather' shape associated with the genus Cytherella. Surface covered overall with coarse, widely spaced ovate fossae, in some areas ( adjacent to the AM rim) forming a reticulate pattern. Internal features. No internal views available. Remarks This genus has been recorded from the Campanian of Western Australia by Bate (1972), who illustrated two juveniles in open nomenclature. Our species differs from these in details of surface Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
