. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 350 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 200. Distoloceras spinosissimum (Hausmann). Ventral and lateral views of BMNH- XI08A, showing well-developed main ribs and thus very close to D. hirtzi Collignon. x 0,66. Photo: W. J. Kennedy. section would change with uncoiling), while prior to the appearance of inter- calated ribs in D. hystrix, the ribbing is seen to arise in pairs from umbilical tubercles, whereas in D. spinosissimum they are simple. Distoloceras laticostatum Imlay is known only from t
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 350 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 200. Distoloceras spinosissimum (Hausmann). Ventral and lateral views of BMNH- XI08A, showing well-developed main ribs and thus very close to D. hirtzi Collignon. x 0,66. Photo: W. J. Kennedy. section would change with uncoiling), while prior to the appearance of inter- calated ribs in D. hystrix, the ribbing is seen to arise in pairs from umbilical tubercles, whereas in D. spinosissimum they are simple. Distoloceras laticostatum Imlay is known only from tightly coiled, pyritic specimens. It is more compressed, with closer, more strongly developed ribs which may bifurcate at either the umbilical shoulder, or at mid-flank. Bifurca- tion of ribbing has not been recorded from D. spinosissimum. Distoloceras. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
