Scielo RSS <![CDATA[African Natural History]]> vol. 8 num. lang. es <![CDATA[SciELO Logo]]> <![CDATA[<b>Cretaceous faunas from Zululand and Natal, South Africa. The ammonite genera <i>Mojsisovicsia</i> Steinmann, 1881, <i>Dipoloceroides</i> Breistroffer, 1947, and <i>Falloticeras</i> Parona & Bonarelli, 1897</b>]]> Mojsisovicsia ventanillensis (Gabb, 1877), Dipoloceroides delaruei (d'Orbigny, 1841), D. semicornutum (Spath, 1931), D. cornutum (Pictet, 1847) and Falloticeras proteus (d'Orbigny, 1842) are described from the Middle Albian Mzinene Formation of northern KwaZulu-Natal. The interpretation of micromorph species associated with these taxa is reviewed, and duerfeldi of Steinmann, 1881, is interpreted as the microconch of ventanillensis as a working hypothesis. The status of proteus as either microconch or micromorph is unresolved. <![CDATA[<b>Revision of the crown crabs, genus <i>Hymenosoma</i> (Crustacea: Hymenosomatidae), of South Africa</b>]]> Recent genetic studies have shown that the South African crown crab, Hymenosoma orbiculare, in fact represents five distinct species, three of which are new to science and one of which needs to be resurrected. Three of these species occur in the southwestern Cape, the remaining two being found in estuaries on the South East and East coasts of South Africa. Based on genetic evidence and morphological analyses, H. geometricum Stimpson, 1858 is no longer considered a junior synonym of H. orbiculare, and is resurrected as a full species. A deeper-water species from False Bay, H. trilobatum sp. nov. as well as two East coast species, H. longicrure sp. nov. and H. projectum sp. nov., are described. The true H. orbiculare ranges from Walvis Bay in Namibia to the Gqunube Estuary near East London. H. geometricum and H. trilobatum sp. nov. are both found in deeper water and are currently known only from False Bay. H. longicrure sp. nov. is found from the Qolora Estuary to the Mngazi Estuary in the Eastern Cape and H. projectum sp. nov. along the east coast from the Mzimvubu Estuary to Lake Sibaya and Kosi Bay. The size and shape of the rostrum and ornamentation of the carapace are the main features distinguishing species. H. orbiculare has a smooth, simple rostrum and only two pairs of plain teeth on the carapace; H. geometricum has a very complex, long, trilobate rostrum and three pairs of complex, granulate teeth on the carapace; H. trilobatum sp. nov. has a less complex, extended, trilobate rostrum with smooth margins and granulate surface, with only two pairs of teeth on the carapace; H. longicrure sp. nov. and H. projectum sp. nov. both have a simple rostrum, little ornamentation on the carapace and unusual abdominal projections. <![CDATA[<b>Cretaceous faunas from Zululand and Natal, South Africa. The Santonian-Campanian ammonite genus <i>Eulophoceras</i> Hyatt, 1903</b>]]> The distinctive Santonian-Campanian ammonite genus Eulophoceras Hyatt, 1903, is revised and assigned to the subfamily Lenticeratinae. Pelecodiscus Van Hoepen, 1921, and Spheniscoceras Spath, 1921, are junior synonyms. Praelibycoceras H. Douvillé, 1912, regarded as a junior synonym by previous authors, is regarded as a separate taxon. All seven species previously recorded from the Mzamba Formation of the Eastern Cape Province are assigned to a variable, dimorphic Eulophoceras natalense Hyatt, 1903, which is also recorded from the St Lucia Formation of KwaZulu-Natal, as is a second species, Eulophoceras bererense Hourcq, 1949. The Madagascan representatives of the genus are described and illustrated for comparison, and the status of other species referred to the genus reviewed. <![CDATA[<b>Cretaceous faunas from Zululand and Natal, South Africa. The desmoceratoid ammonite genera <i>Moretella</i> Collignon, 1963, <i>Beudanticeras</i> Hitzel, 1902, and <i>Aioloceras</i> Whitehouse, 1926</b>]]> Three taxa of desmoceratoid ammonites are recognized in the Lower Albian of northern KwaZulu-Natal, all of them previously known only from Madagascar: Moretella sp., Beudanticeras komihevitraense Collignon, 1950, and Aioloceras besairiei (Collignon, 1949). Madagascan type and figured material, much of it difficult to interpret from the original figures is re-illustrated, and the intraspecific variation and dimorphism in Moretella and Aioloceras are documented.