Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . nother specimen, SAS 54/41/2 (Fig. 14), no sign of tubercles is visible at awhorl breadth of 21 mm. Two very slight constrictions are present onSAM-PCM5313. Dimensions SpecimenSAM-PCM5317 D 89,2 Wb 37(41,4) Wh 40,2(45) Wb/Wh0,92 U 33,5(37,5) Discussion The round whorl section clearly distinguishes A. (Ad.) cooperi fromA. (Ad.) mozambiquense. Furthermore, the initial spire is much smaller in theformer. The holotype bears a superficial resemblance to some of the speciesredescribed by Thomel (1964), A. (Ad.) aff. co
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . nother specimen, SAS 54/41/2 (Fig. 14), no sign of tubercles is visible at awhorl breadth of 21 mm. Two very slight constrictions are present onSAM-PCM5313. Dimensions SpecimenSAM-PCM5317 D 89,2 Wb 37(41,4) Wh 40,2(45) Wb/Wh0,92 U 33,5(37,5) Discussion The round whorl section clearly distinguishes A. (Ad.) cooperi fromA. (Ad.) mozambiquense. Furthermore, the initial spire is much smaller in theformer. The holotype bears a superficial resemblance to some of the speciesredescribed by Thomel (1964), A. (Ad.) aff. collignoni Sarkar, 1955 (Thomel1964: 58, pi. 9 (fig. 1), text-fig. 7A), A. (Ad.) kaliae Sarkar 1955 (Thomel 1964:57, pi. 10 (fig. 1), text-fig. 7B), and A. (Ad.) adouli Astier (Thomel 1964: 56, pi. 9(fig. 2), text-fig. 7C) as far as the size of the planispirally coiled section isconcerned. A. (Ad.) adouli has a whorl section similar to that of the presentspecies, but lacks the regular tuberculation (see Thomel 1964: 58, fig. 7) and has 238 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 12. A. Ancyloceras {Adouliceras) mozambiquense Krenkel, 1910. SAM-PCM5505 fromLubemba, Mozambique, Lower Aptian. x 1,3. B. Ancyloceras {Adouliceras) cooperi sp. from same locality and horizon as above, x 1,4. C. Ancyloceras {Adouliceras)cooperi sp. nov SAS 54/42/2 from locality 170, Zululand, Aptian I—II. Typical rounded 1,4. D. Ancyloceras {Adouliceras) mozambiquense Krenkel, 1910. SAM-PCM5351 fromMozambique, Lower Aptian. x 1,3. CRETACEOUS FAUNAS FROM SOUTH AFRICA 239
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
