. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 220 ANNALS OF THE SOUTH AFRICAN MUSEUM development; they are weaker and rounded on the mould but flattened and bar- like, with narrower slot-like interspaces, where the test is preserved. They increase progressively in strength as the diameter increases in the smaller specimen but on the body chamber of SAS Z709 they show a marked strengthening over the last quarter whorl. There is occasional branching at various points on the flank. There are periodic narrow, flexuous, prorsiradiate constrictions th
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 220 ANNALS OF THE SOUTH AFRICAN MUSEUM development; they are weaker and rounded on the mould but flattened and bar- like, with narrower slot-like interspaces, where the test is preserved. They increase progressively in strength as the diameter increases in the smaller specimen but on the body chamber of SAS Z709 they show a marked strengthening over the last quarter whorl. There is occasional branching at various points on the flank. There are periodic narrow, flexuous, prorsiradiate constrictions that are most obvious on the internal mould, where they are strongest over the umbilical shoulder. In BMNH C83332 there are an estimated ten per whorl, associated with broad collars on the mould. It is not clear whether or not they truncate ribs. In SAS Z709 constrictions are again well developed and appear to be associated with stronger collars where the shell is preserved. '. Fig. 29. Maorites subtilistriatus Collignon, 1954; the holotype, the original of Collignon (1954, pi. 9 (fig. 3-3a)), from the Lower Campanian of Berere, Madagascar, x 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
