. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. . Fig. 58. Stoliczkaia tetragona Neumayr. Copy of Stoliczkaia 1864, pi. 45 (fig. 2-2a). xl. distinctly differentiated lower ventrolateral tubercles. However, there can be little doubt that records of Mantelliceras (Thomel 1972) and Submantelliceras (Adkins 1920) from the Upper Albian are based upon juveniles of Stoliczkaia. Kennedy & Hancock (1971) have shown Submantelliceras martimpreyi (Coquand) to be a junior subjective synonym of M. saxbii (Sharpe), from which the authors' material differs in being more compre
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. . Fig. 58. Stoliczkaia tetragona Neumayr. Copy of Stoliczkaia 1864, pi. 45 (fig. 2-2a). xl. distinctly differentiated lower ventrolateral tubercles. However, there can be little doubt that records of Mantelliceras (Thomel 1972) and Submantelliceras (Adkins 1920) from the Upper Albian are based upon juveniles of Stoliczkaia. Kennedy & Hancock (1971) have shown Submantelliceras martimpreyi (Coquand) to be a junior subjective synonym of M. saxbii (Sharpe), from which the authors' material differs in being more compressed, lacking distinct lower ventrolateral tubercles and in showing a marked, and characteristic, change of ornament on the body chamber. However, the fact that Thomel (1972) assigned late Albian species of Stoliczkaia to M. saxbii merely serves to emphasize the close relationship between these two genera and suggests that the origin of (at least) compressed Mantelliceras and Utaturiceras lies close to Stoliczkaia of tenuis type. The writers would also point to the close similarity of compressed variants to juvenile Forbesiceras (see Juignet & Kennedy 1977), generally described as Neopulchellia (a subjective synonym), and evidence for the descent of Forbesiceras from the S. (S.) tenuis group is to be published elsewhere. Occurrence S. (Stoliczkaia) tenuis is so far known only from the Upper Albian of Switzerland and 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 [etc. ] The Museu
Size: 1086px × 2302px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorsouthafr, bookcentury1800, bookdecade1890, bookyear1898
