. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 63. Mortoniceras (Durnovarites) perinflatum (Spath). Ventral and lateral views of SAM-PCA4802. xl. Measurements No. D H W w/h U USNMNH 237021 53 22,5(42) ? ? 17(32) 5? 44 ±19(43) ±20(45) 1,05 ? USNMNH 237022 35 ±16(46) ±15(43) 0,93 12,5(3( Discussion Renz (1968) showed M. (D.) quadratwn to be based upon juveniles of M. {D.) perinflatum, whilst M. (D.) vraconense appears to comprise hyponodose adults which the authors do not consider to bear specific separation from M. (D.) perinflatum. Similarly
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Fig. 63. Mortoniceras (Durnovarites) perinflatum (Spath). Ventral and lateral views of SAM-PCA4802. xl. Measurements No. D H W w/h U USNMNH 237021 53 22,5(42) ? ? 17(32) 5? 44 ±19(43) ±20(45) 1,05 ? USNMNH 237022 35 ±16(46) ±15(43) 0,93 12,5(3( Discussion Renz (1968) showed M. (D.) quadratwn to be based upon juveniles of M. {D.) perinflatum, whilst M. (D.) vraconense appears to comprise hyponodose adults which the authors do not consider to bear specific separation from M. (D.) perinflatum. Similarly, M. (D.) postinflatum diners from the strictly contemporaneous M. (D.) perinflatum only by its more prominent ventrolateral tubercles and more inflated whorls (w/h = 1,20-1,65). The authors do not regard the differences as sufficient for specific separation and place M. (D.) postinflatum within the synonomy of M. (D.) perinflatum, although the name might usefully be retained at the varietal level. Durnovarites adkinsi Young was separated from M. (D.) perinflatum on the basis of its slightly rounder ribs, less tumid flanks, and denser-ribbed inner. 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
