Annals of the South African Museum, Volume 97South African Museum, 1985 - Natual history |
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Page 110
... ornament . Dyscolia johannisdavisi has a more marked marginal flange , a short concave symphytium that is usually hidden by the dorsal umbo and only faintly developed radial ornament . Indeed , in Alcock's original description ( 1894 ...
... ornament . Dyscolia johannisdavisi has a more marked marginal flange , a short concave symphytium that is usually hidden by the dorsal umbo and only faintly developed radial ornament . Indeed , in Alcock's original description ( 1894 ...
Page 125
... Ornament consists of strong rounded costae , which become broader anteriorly and increase by branching . Posterolateral corners of brachial valve devoid of radial ornament . Concentric ornament of faint growth lines . B C D Fig . 13 ...
... Ornament consists of strong rounded costae , which become broader anteriorly and increase by branching . Posterolateral corners of brachial valve devoid of radial ornament . Concentric ornament of faint growth lines . B C D Fig . 13 ...
Page 128
... ornament absent from lateral margins of both valves . Concentric ornament of closely spaced growth lines . Pedicle valve elongately triangular ; lateral profile evenly convex ; anterior profile with median flattening and development of ...
... ornament absent from lateral margins of both valves . Concentric ornament of closely spaced growth lines . Pedicle valve elongately triangular ; lateral profile evenly convex ; anterior profile with median flattening and development of ...
Contents
The Elandsfontein material | 31 |
The Zululand specimen | 39 |
Acknowledgements | 53 |
Copyright | |
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Common terms and phrases
50 m Complex abbreviations Annals anteriorly apelex author's name Avontuur Barnard Benguela body whorl brachial valve brachiopods calvus canines Cape Province Cape Town Carrington & Kensley Ciconia coast columella Concholepas conjoined valves crura cusp deltidial plates deposits depth described Description Shell Diaphus distal dorsal dune early Pleistocene Elandsfontein elongate fauna figures fossil Gastropoda genus Geronticus Gnathopod Haughton Hendey high sea-level hinge Holotype Hondeklip Zone Hottentot Hulley italics Kilburn Lampanyctus Langebaanweg lanternfishes length limnetes loop mandible margin material Megerlia mexicanus Mollusca Myctophidae Myctophum Nafpaktitis nigrescens Ocean outer lip paratypes parentheses pedicle pedicle valve photophore Pliocene posterior postnatal whorls present recorded references region ribs rounded Saldanha Bay scientific name sclerites sculpture separates Skurwerug slightly Smith socket ridges South African Museum species specific name specimens spiral lirae subheadings Synonymy Table Tankard tooth Triphoturus upper USNM valve interior ventral views of conjoined width Xenobrochus