. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . 1 OS, r d*y/. %m-^ -w-^- *-w~ r*>r^ r,,-H-y> •7-7- ^rTp ^r> if*/•> :.*.?:. //A -5 r^A - ? „5 *-. Figure 4 Diplomoceras cylindraceum (Defrance, 1816). IRSNB 10257 (IG 6521 ex Ubaghs Collection) from theupper Maastrichtian Calcaire de Kunraed of Kunrade, Limburg, The Netherlands, x 1. OBSER VA TIONS ON THE SYSTEMA TICS OF DIPLOMOCERAS CYLINDRACEUM 179 Unfortunately, Collignons sutural terminology is confusing and needs to be to the sutural terminology of Wedekind (1916), reviewed by Kul
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . 1 OS, r d*y/. %m-^ -w-^- *-w~ r*>r^ r,,-H-y> •7-7- ^rTp ^r> if*/•> :.*.?:. //A -5 r^A - ? „5 *-. Figure 4 Diplomoceras cylindraceum (Defrance, 1816). IRSNB 10257 (IG 6521 ex Ubaghs Collection) from theupper Maastrichtian Calcaire de Kunraed of Kunrade, Limburg, The Netherlands, x 1. OBSER VA TIONS ON THE SYSTEMA TICS OF DIPLOMOCERAS CYLINDRACEUM 179 Unfortunately, Collignons sutural terminology is confusing and needs to be to the sutural terminology of Wedekind (1916), reviewed by Kullmann &Wiedmann (1970), the adult suture of Cretaceous heteromorph ammonites consists offour lobes, E (External), L (Lateral), U (Umbilical) and / (Internal); the three saddles arereferred to by their positions relative to the lobes, E/L, L/U, U/I. The following is Collignons original diagnosis of Neoglyptoxoceras (1969: 35) withour interpretation of the sutural terminology in parenthesis. ...et surtout par sa cloison qui compte 4 selles au lieu de 3, et 3 lobes au lieu de 2. Ces 4selles sont de forme caree, avec lobule median plus ou moins oblique. Le premier lobe (L)tre
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
