Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . e low, rounded ribs. On the first major ribthree rows of tubercles are present, of which the lateral one is best the distal end, however, only umbilical and lateral tubercles remain, but thelateral tubercle is enormous. Viewed laterally there is resemblance to Murphys Ancyloceras thomeli(1975: 24, pi. 3 (figs 1, 5), pi. 11 (figs 1-2)). In the Californian species, however,the ventral row of tubercles only appears towards the bend in the crozier,whereas the reverse holds true for the Zululand specimen. Genu
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . e low, rounded ribs. On the first major ribthree rows of tubercles are present, of which the lateral one is best the distal end, however, only umbilical and lateral tubercles remain, but thelateral tubercle is enormous. Viewed laterally there is resemblance to Murphys Ancyloceras thomeli(1975: 24, pi. 3 (figs 1, 5), pi. 11 (figs 1-2)). In the Californian species, however,the ventral row of tubercles only appears towards the bend in the crozier,whereas the reverse holds true for the Zululand specimen. Genus Lithancylus Casey, 1960Type species Hamites grandis J. de C. Sowerby, 1828 from the Lower Aptian of southernEngland by original designation of Casey (1960: 16). CRETACEOUS FAUNAS FROM SOUTH AFRICA 251 Diagnosis Coiling probably ancyloceratid, with a long, curved or straight shaft,ending in a recurved hook. Section of shaft circular to oval, sub-octagonal oncrozier. Ornament consists of low, rounded oblique ribs on the shaft; towardsthe crozier trituberculate ribs Fig. 22. Ancyloceras (Adouliceras) gr. ex mozambiquense-cooperi. SAS 54/45/4 from locality170, Zululand, Aptian I-II. Form 5. x 0,59. 252 ANNALS OF THE SOUTH AFRICAN MUSEUM
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
