Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . ExtT SAS-H139 165 114,2GSO CT 223,9(unnumberedspecimen) 44,5(27,0)32,8(28,7) 57,0(34,5)39,8(34,8)71,6(31,9) 0,780,82 72,7(44,1) 48,3(42,3) (45,3) 312936 333436 Description SAS-H139 and GSO CT are fairly complete specimens with parts of thebody chamber preserved. Coiling is evolute, with an umbilical diametermeasuring 42 to 45 per cent of the total diameter. Whorl overlap is minimal,covering the successive whorls up to the marginal (4) tubercles. The whorlsection throughout is higher than wide, with a sub-ovo
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . ExtT SAS-H139 165 114,2GSO CT 223,9(unnumberedspecimen) 44,5(27,0)32,8(28,7) 57,0(34,5)39,8(34,8)71,6(31,9) 0,780,82 72,7(44,1) 48,3(42,3) (45,3) 312936 333436 Description SAS-H139 and GSO CT are fairly complete specimens with parts of thebody chamber preserved. Coiling is evolute, with an umbilical diametermeasuring 42 to 45 per cent of the total diameter. Whorl overlap is minimal,covering the successive whorls up to the marginal (4) tubercles. The whorlsection throughout is higher than wide, with a sub-ovoid to subrectangularwhorl section both in costal and intercostal section. Specimen SAS-H139 has the innermost whorls preserved up to a diameterof 7 mm. Here ornament consists of regularly bifurcating ribs with weakumbilical, and strong ventrolateral, spines. Beyond a diameter of 7 mm ribsbifurcate frequently with occasional single ribs. The ventrolateral row oftubercles progressively migrates away from the umbilical wall to expose a CRETACEOUS FAUNAS FROM SOUTH AFRICA 163. Fig. 123. Texanites texanus (Roemer, 1852). Unnumbered specimen from the Cape Townbranch of the Geological Survey. Probably referable to subspecies or variety hispanica. 164 ANNALS OF THE SOUTH AFRICAN MUSEUM
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
