Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . have to be ruled out because of its occurrence in the UpperAptian. Egojan (1974) recently described Upper Aptian uncoiled ammonitesfrom the Caucasus, which he referred to a new family, Epacrioceratidae. Themain characteristic of the family is the presence of a bipartite lateral lobe (L)and a smaller trifid U and I. In the present specimen the lateral lobe is distinctlyasymmetric (Fig. 80B) but is more trifid than bifid. On the basis of the limitedmaterial further speculation on the affinity of the Zululand specimen wi
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . have to be ruled out because of its occurrence in the UpperAptian. Egojan (1974) recently described Upper Aptian uncoiled ammonitesfrom the Caucasus, which he referred to a new family, Epacrioceratidae. Themain characteristic of the family is the presence of a bipartite lateral lobe (L)and a smaller trifid U and I. In the present specimen the lateral lobe is distinctlyasymmetric (Fig. 80B) but is more trifid than bifid. On the basis of the limitedmaterial further speculation on the affinity of the Zululand specimen with theCaucasian material serves little purpose. PALAEOBIOGEOGRAPHY The distribution of the Aptian ammonoid genera Ancyloceras {Adouliceras),Tropaeum, Australiceras, Lithancylus, Toxoceratoides and Tonohamites issummarized in Figure 89. The sources of these data are as follows:Lithancylus Casey 1961 (England & Tyrol); Anderson 1938 (California); Day 1974 (Australia); Leanza 1970 (Patagonia); Thomson 1974 (Alexander Island). 350 ANNALS OF THE SOUTH AFRICAN MUSEUM 4 VWA. Fig. 85. Insertae sedis. SAS Z8(l) from locality 186, Zululand, Aptian III-IV. x 1,3. CRETACEOUS FAUNAS FROM SOUTH AFRICA 351
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
