. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . Figure 7 Pseudoxybeloceras matsumotoi Collignon, 1965. SAM-PCZ18747 from locality 92. A specimen whichhas part of the original aragonitic shell preserved. A. is an enlarged section of the septate section of B toshow weak ribbing on the internal mould, radially elongated, rounded, solid ventrolateral tubercles ofthe middle nacreous layer, and the hollow ventral row of spines of what we suspect to be the outer, prismatic layer. A. x 2, B. x 1. 212 ANNALS OF THE SOUTH AFRICAN MUSEUM. Figure Pseudoxybeloceras matsumotoi
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . Figure 7 Pseudoxybeloceras matsumotoi Collignon, 1965. SAM-PCZ18747 from locality 92. A specimen whichhas part of the original aragonitic shell preserved. A. is an enlarged section of the septate section of B toshow weak ribbing on the internal mould, radially elongated, rounded, solid ventrolateral tubercles ofthe middle nacreous layer, and the hollow ventral row of spines of what we suspect to be the outer, prismatic layer. A. x 2, B. x 1. 212 ANNALS OF THE SOUTH AFRICAN MUSEUM. Figure Pseudoxybeloceras matsumotoi Collignon, 1965. SAM-PCZ18747 from locality 92. Magnified sectionof the body chamber part of Fig. 7B to show details of ventral and ventrolateral tuberculation. x 2. OBSERVATIONS CWPSEUDOXYBELOCERAS MATSUMOTOI 213
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
