. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. UPPERMOST ALBIAN AMMONITES FROM THE ANGOLAN LITTORAL 265. Fig. 59. Stoliczkaia crotaloides (Stoliczka). Copy of Stoliczka 1864, pi. 46 (fig. 3-3a). XI. Family Brancoceratidae Spath, 1934 Subfamily Brancoceratinae Spath, 1934 Genus Hysteroceras Hyatt, 1900 Type species Ammonites varicosus J. de C. Sowerby, 1824 Discussion Hysteroceras is typically a low Upper Albian micromorph genus, clearly descended from the earlier Brancoceras, and has generally been regarded as characteristic of, and largely confi
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. UPPERMOST ALBIAN AMMONITES FROM THE ANGOLAN LITTORAL 265. Fig. 59. Stoliczkaia crotaloides (Stoliczka). Copy of Stoliczka 1864, pi. 46 (fig. 3-3a). XI. Family Brancoceratidae Spath, 1934 Subfamily Brancoceratinae Spath, 1934 Genus Hysteroceras Hyatt, 1900 Type species Ammonites varicosus J. de C. Sowerby, 1824 Discussion Hysteroceras is typically a low Upper Albian micromorph genus, clearly descended from the earlier Brancoceras, and has generally been regarded as characteristic of, and largely confined to, the Mortoniceras inflatum Zone. However, micromorph brancoceratids persist into the highest levels of Albian where they have generally been referred to as Spathiceras or Mortoniceras (Cantabrigites). Whitehouse (1927: 110) introduced Spathiceras without formal diagnosis, merely naming as type of the genus Hystrichoceras antipodeum Etheridge (1902: 47, pi. 7 (figs 6-7)). The holotype of 5*. antipodeum is from the Upper Albian of Point Charles, near Darwin, Northern Australia, where it occurs associated with Desmoceras latidorsatum (Michelin) (= D. carolensis Etheridge 1902, pi. 7 (figs 2-5)), Idiohamites cf. spinulosus (J. Sowerby) (= Ancyloceras (?) sp. ind., Etheridge 1902, pi. 7 (figs 14-15)), Scaphites eruciformis Etheridge (very close to S. simplex Jukes-Browne), Hamites cf. virgulatus (Brongniart) (= Hamites (?) sp. ind., Etheridge 1902, pi. 7 (figs 12-13)), Aucellina gryphaeoides (J. de C. Sowerby) (= A. incurva Etheridge), together with the genera Beudanticeras, Labeceras, Myloceras, Anisoceras and Ptychoceras (Whitehouse 1928). Because. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
