Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . hetero-chronous partial convergence with little genetic relationship. Occurrence Middle Campanian, Zone of Delawarella suhdelawarensis and Australiellaaustralis in Madagascar, and Campanian II-III of Zululand. Menabites (Australiella) falloti (Collignon, 1932)Figs 230A, 241-243Mortoniceras falloti CoWi&ion, 1932: 37, pi. 5 (fig. 1-1 b); 1938: 76. Type The holotype is the specimen figured by Collignon (1932; pi. 5 (fig. 1-lb))from the Senonian of Zululand, collected by P. Fallot in 1929 and presentlyhoused in the Palae
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . hetero-chronous partial convergence with little genetic relationship. Occurrence Middle Campanian, Zone of Delawarella suhdelawarensis and Australiellaaustralis in Madagascar, and Campanian II-III of Zululand. Menabites (Australiella) falloti (Collignon, 1932)Figs 230A, 241-243Mortoniceras falloti CoWi&ion, 1932: 37, pi. 5 (fig. 1-1 b); 1938: 76. Type The holotype is the specimen figured by Collignon (1932; pi. 5 (fig. 1-lb))from the Senonian of Zululand, collected by P. Fallot in 1929 and presentlyhoused in the Palaeontology Collections of the Geological Institute, Nancy. Material SAM-PCZ5870, Bed 1 locality 110, foreshore exposures at the south-western tip of Nibela, Zululand, St Lucia Formation, Campanian II; SAS-Z843, Z1547, Z2097, all from an unknown horizon at locality 109 or 110 atthe south-western tip of the Nibela Peninsula, St Lucia Formation, Cam-panian II; BMNH-C81443-C81444, C81477, locality 109, St Lucia Formation,Campanian 11. 316 ANNALS OF THE SOUTH AFRICAN MUSEUM. -^ Fig. 241. Menabites (Australiella) falloti (CoWignon, 1932). SAM-PCZ5685. With whorl section transitional to M. (A.) besairiei. X 1. CRETACEOUS FAUNAS FROM SOUTH AFRICA 317 Dimensions D Wb Wh Wb:Wh U Int. L. after Collignon 90 34 (37,8) 35,0(38,9) 0,97 30,0(33,3) 22 — — 118,0 46,0(38,9) 47,0(39,8) 0,98 35,0(29,6) 14 — — Z843 124,0 54,0(43,5) 45,0(36,3) 1,20 — _ _ _ Z2097 176,0 63,0(35,8) 61,0(34,7) 1,03 58,0(32,9) Description Coiling is moderately involute with an umbilical width of the order of30 to 33 per cent of the total diameter. Whorl overlap is up to the fourth rowof tubercles and the dorsal zone of impression is very shallow. The whorl section is rounded, as wide as high in the early stages of growth(Fig. 243) but later becomes higher than wide (Fig. 230A); in some casesextremely so. None of the Zululand specimens has the innermost whorls preserved, butat a diameter of c. 70 mm al
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
