Annals of the South African Museum, Volume 73

abbreviations adcauline Africa Ammonites Ancyloceras appear Aptian Australiceras authors base bearing becomes BMNH body chamber branches Cape capital Casey closely coiling collected Collignon colony consists Cretaceous crozier described Description designated developed diameter differs Discussion distal dorsal early Eoxenopoides Family female figures flanks fossil genus Geol given gonothecae Haughton height Helicancyloceras holotype hydrothecae illustrations included indicated initial inner internode Island known lateral length LIBRARY lobe locality Lower margin material metres Mozambique nematothecae Note occur original ornament placed present recorded referred region relatively Remarks ribs rounded segment separated seta shaft shoulder side similar single slightly South African Museum southern species specimen spines stages Station stem suture Synonymy Table Tetragonites third Toxoceratoides Tropaeum tubercles umbilical Upper venter ventral whorl section wide Xenopus Zululand