Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . 1952B 180,0 57,0(31,7) 67,0(37,2) 0,85 69,0(38,3) 13x2 30 Z1844 at 180,0 52,0(28,9) 67,0(37,2) 0,78 68,0(37,8) 15x2 30 at 76,0 26,5(34,9) 34,0(44,7) 0,78 27,5(36,2) 14 36 Z1870 180,0 62,0(34,4) 70,0(38,9) 0,89 71,0(39,4) 24 26 H126B/3 187,0 56,0(29,9) 73,0(39,0) 0,77 69,0(36,9) 18 28 Z2199 205,0 58,0(28,3) 75,5(26,8) 0,17 83,0(40,5) 30 30 Z1822 261,0 75,0(28,7) 94,0(36,0) 0,79 101,0(38,7) 22 24 PCZ5884 263,0 76,0(28,9) 97,0(36,9) 0,78 97,0(36,9) — — Z1881 230,0 62,0(26,9) 79,0(34,3) 0,78 88,0(38,3) 29 — Z353 236,0 63,
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . 1952B 180,0 57,0(31,7) 67,0(37,2) 0,85 69,0(38,3) 13x2 30 Z1844 at 180,0 52,0(28,9) 67,0(37,2) 0,78 68,0(37,8) 15x2 30 at 76,0 26,5(34,9) 34,0(44,7) 0,78 27,5(36,2) 14 36 Z1870 180,0 62,0(34,4) 70,0(38,9) 0,89 71,0(39,4) 24 26 H126B/3 187,0 56,0(29,9) 73,0(39,0) 0,77 69,0(36,9) 18 28 Z2199 205,0 58,0(28,3) 75,5(26,8) 0,17 83,0(40,5) 30 30 Z1822 261,0 75,0(28,7) 94,0(36,0) 0,79 101,0(38,7) 22 24 PCZ5884 263,0 76,0(28,9) 97,0(36,9) 0,78 97,0(36,9) — — Z1881 230,0 62,0(26,9) 79,0(34,3) 0,78 88,0(38,3) 29 — Z353 236,0 63,0(26,7) 90,0(38,1) 0,70 90,0(38,0) 26 38 Diagnosis Extremely variable, but basically moderately involute, with umbilicaldiameter of about 35 to 40 per cent in the adult stage, in juvenile specimens section higher than wide, with maximum costal width at the lateral (2)tubercle, or, infrequently in juvenile specimens, at umbilical edge. Umbilicalwall varies from rounded to near-vertical to overhanging. Ornament varies CRETACEOUS FAUNAS FROM SOUTH AFRICA 215. Fig. 164. Texanites soutoni natalense ssp. nov. Holotype SAS-H126B/3. X 0,75. from weak to strong. Some specimens tend to develop a smooth Submortoni-ceras-VikQ ornament on the inner phragmocone whorls, followed by normalTexanites ornament on the outer phragmocone whorls. The umbilical (1)tubercles point inward, the lateral (2) tubercles are clavate on the inner whorls,but tend to become radially elongated on the outer whorls, and may be veryprominent. The submarginal, marginal and external (3-5) tubercles are clavatethroughout. Ribs on body chamber may curve slightly forward over the flanks,with oblique, prorsiradiate extensions over the umbilical wall. Bifurcations and 216 ANNALS OF THE SOUTH AFRICAN MUSEUM
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
