Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumWest, Newman & Company for the trustees of the Museum, 1989 - Natural history |
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Page 191
... aperture . Later forms with straight shaft , aperture parallel to shaft , very similar or identical to Myloceras , and can only be distin- guished by virtue of the lateral tubercles . 5. Ornament becomes subdued in later forms and ...
... aperture . Later forms with straight shaft , aperture parallel to shaft , very similar or identical to Myloceras , and can only be distin- guished by virtue of the lateral tubercles . 5. Ornament becomes subdued in later forms and ...
Page 199
... aperture , as restored . . . shows a slight ventral and two more prominent lateral lappets ' . Subsequently Wright ( 1953 : 473 ) noted that ... Labeceras has lateral lappets , whereas the probably closely related Myloceras has an aperture ...
... aperture , as restored . . . shows a slight ventral and two more prominent lateral lappets ' . Subsequently Wright ( 1953 : 473 ) noted that ... Labeceras has lateral lappets , whereas the probably closely related Myloceras has an aperture ...
Page 207
... aperture of Myloceras serotinum . SAM - 7665 . × 3,9 . B - C . Labeceras plasticum . B. SAM - Z450 . C. A2173 . The only reliable feature in the systematics of Myloceras appears to be the whorl section ( see also Reyment 1964a : 31 ) ...
... aperture of Myloceras serotinum . SAM - 7665 . × 3,9 . B - C . Labeceras plasticum . B. SAM - Z450 . C. A2173 . The only reliable feature in the systematics of Myloceras appears to be the whorl section ( see also Reyment 1964a : 31 ) ...
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Common terms and phrases
abbreviated Africa-Madagascar and Australia Albian of Zululand AMMONITE Ancyloceratinae Angola Angola Basin Austral Basin Baculites Besairié besairiei Collignon Brazil-Angola Basin Cape Basin Cenomanian ceras climate Cobban coiling Collignon 1963 comma compressed whorl section crassicostatum Cretaceous CROZIER Estancia La Vega Etheridge F G H faunas figures Gastropoda genera Hamites heteromorph Holotype intraspecific Labe Labeceras and Myloceras Labeceras crassetuberculatum Klinger Labeceras gr Labeceras rectum Labeceras Spath Later forms lateral lappets Leanza Leda Madagascar material McNamara microconch Middle Albian Mozambique Mylo Myloceras bituberculatum sp Myloceras gr Myloceras rotundum Klinger Myloceras serotinum Spath onshore Ornament paratypes parentheses Patagonia phylogenetic PHYLOGENY punctuation recorded Reyment Roman numerals Samana Range Santa Cruz Province scaphitids scientific name Sketch of aperture Smith South African Museum South Atlantic southern India straight shaft strati stratigraphic range suggested Suture line Synonymy systematics type species umbilical tubercles Upper Albian venter Venzo Walvis Ridge Wiedmann & Dieni Wright