. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history; Natuurlijke historie; Sociale geschiedenis; Culturele antropologie. CAMPANIAN AND MAASTRICHTIAN OSTRACODA 133 Maastrichtian I Campanian III I V| IV | III | II Santonian III. An- \ / 20 21 113 110 I ? . I I I i i i I till Cytherella sp. 8 7-3,7-2,7-1,5 3 1-3,1-2,1-1 1 13 11 3 1 0 21 19 14 2 E? pyramidatus A^mclachlani .,., „&amn/iWS>,2 / Haughtonileber
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history; Natuurlijke historie; Sociale geschiedenis; Culturele antropologie. CAMPANIAN AND MAASTRICHTIAN OSTRACODA 133 Maastrichtian I Campanian III I V| IV | III | II Santonian III. An- \ / 20 21 113 110 I ? . I I I i i i I till Cytherella sp. 8 7-3,7-2,7-1,5 3 1-3,1-2,1-1 1 13 11 3 1 0 21 19 14 2 E? pyramidatus A^mclachlani .,., „&amn/iWS>,2 / Haughtonileberis 7,.r,i!illlljfWflfTT7 "^ .*>. — "^ . ..... H. haughtoni H. vanhoepeni C. umzambaensis A. zululandensis assemblage population trends higher taxa dominant species borehole & locality bed number T. zululandensis _ C? dubia P. tragi 4 westaust ral iense " 3 other species Fig. 67. Variations in the Campanian-Maastrichtian ostracod faunas of Zululand (Richards Bay BH-9 borehole, and outcrops at Nibela Peninsula (locality 110 & 113), Monzi (locality 21), and Mfolozi River (locality 20)). Discontinuities in the various trends have been used to delimit ostracod assemblages 4a, b-7, which are described in detail in the text and summarized in Tables 6 and 9. Population turnover is a measure of the number of new appearances and extinctions in each sample, and population diversity is calculated as number of species per hundred specimens and expressed as a percentage. Population similarity is calculated between adjacent samples in the sequence as number of species common to the two samples/total number of species in both samples x 100. Fluctuations in population similarity will give an assessment of population stability—a sequence of highly similar samples will denote a stable a u:„u~.. Pleas
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