. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . SAM-PCA1892 105 43 (41) c. 40 (38) 32 (30) Discussion The exaggerated ventrolateral horns of the present species preclude it fromPseudaspidoceras as currently interpreted. Although immature growth stages of theAngolan material conform closely to the type of Pseudaspidoceras curvicostatumReyment (1955: 55, pi. 11 (fig. 1), pi. 12, text-fig. 24) and, initially, were identified assuch, the outer whorls are Mammites-like, with exaggerated ventrolateral horns(Fig. 20A). Since ventrolateral horns are a feature of Mor
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . SAM-PCA1892 105 43 (41) c. 40 (38) 32 (30) Discussion The exaggerated ventrolateral horns of the present species preclude it fromPseudaspidoceras as currently interpreted. Although immature growth stages of theAngolan material conform closely to the type of Pseudaspidoceras curvicostatumReyment (1955: 55, pi. 11 (fig. 1), pi. 12, text-fig. 24) and, initially, were identified assuch, the outer whorls are Mammites-like, with exaggerated ventrolateral horns(Fig. 20A). Since ventrolateral horns are a feature of Morrowites, most emphasis is placedon these derived characters, and the Angolan material is assigned to Cobban & Hooks(1983) genus; unfortunately the character of the lateral lobe (L) could not be discerned inthe Angolan material. Zaborski (1995) included Pseudaspidoceras curvicostatum in the synonymy ofP. paganum Reyment (1954: 253, pi. 4 (fig. 1), text-figs 3h, 4). Since the holotype of the UPPER CRETA CEOUS (TURONIAN-CONIA CI AN) AMMONITES FROM SAO NICOLA U, ANGOLA 127. — -? > > My v* mmm
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
