Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . Fig. 10. A-B, E-F. Forresteria (Forresteria) alluaudi (Boule, Lemoine & Thevenin, 1907). E-F. SAM-Z167. C-D. Forresteria (Forresteria) madagascariensis (Collignon, 1965). SAM-D1187I. All xl. 258 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 11. Forresteria (Forresteria) alluaudi (Boule, Lemoine & Thevenin, 1907). A-B. SAS SAS Z1453A. F-H. SAS Z1453B. I-K. SAS Z1438B. L-N. SAS Z946. All xl. CRETACEOUS FAUNAS FROM SOUTH AFRICA 259 to massive lateral nodes that give rise to pairs of ribs linking to
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . Fig. 10. A-B, E-F. Forresteria (Forresteria) alluaudi (Boule, Lemoine & Thevenin, 1907). E-F. SAM-Z167. C-D. Forresteria (Forresteria) madagascariensis (Collignon, 1965). SAM-D1187I. All xl. 258 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 11. Forresteria (Forresteria) alluaudi (Boule, Lemoine & Thevenin, 1907). A-B. SAS SAS Z1453A. F-H. SAS Z1453B. I-K. SAS Z1438B. L-N. SAS Z946. All xl. CRETACEOUS FAUNAS FROM SOUTH AFRICA 259 to massive lateral nodes that give rise to pairs of ribs linking to ventral clavi,exactly as in Forresteria; the only difference appears to be that the siphonalclavi are raised on a low siphonal keel. Several specimens of F. (F.) alluaudithat have been examined show this feature developed weakly at some stage inontogeny ( Fig. 13A-B): it is regarded here as no more than a specificdifference. Zumpangoceras Basse, 1947 (type species Zumpangoceras burckhardtiBasse, 1947: 144) was based on the ammonites described by Burckhardt(1919: 99-108) as Barroisiceras, and later illustrated by him (1921, pi. 22 (), pi. 23 (figs 1-2), pis 24-25). Basse originally thought this to be a subgenusof Barroisiceras and noted the very fine ornament—especially the well-preserved growth str
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
