Annals of the South African Museum, Volume 92The Museum, 1984 - Natual history |
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Page 133
... keel . The ribs form a broad , very low band passing across the venter in a slightly forward direction ' ( Van Hoepen , 1965 : 34 ) . Fraudatoroceras . ' Ammonites with three keels , very wide umbilicus , square sec- tion , fairly large ...
... keel . The ribs form a broad , very low band passing across the venter in a slightly forward direction ' ( Van Hoepen , 1965 : 34 ) . Fraudatoroceras . ' Ammonites with three keels , very wide umbilicus , square sec- tion , fairly large ...
Page 134
... keel bordered on either side by a shallow groove without distinct lateral keels . The median keel is entire or feebly crenate . The flanks are orna- mented by radial ribs which are intercalated or branched , bearing umbilical and ...
... keel bordered on either side by a shallow groove without distinct lateral keels . The median keel is entire or feebly crenate . The flanks are orna- mented by radial ribs which are intercalated or branched , bearing umbilical and ...
Page 139
... keel but no , or only very weak , side keels , the body chamber being oval and virtually smooth with only constrictions and a single keel . Reginaites Reyment , 1957 , of the Texanitinae , of which Reymentites Matsu- moto , 1965 , is a ...
... keel but no , or only very weak , side keels , the body chamber being oval and virtually smooth with only constrictions and a single keel . Reginaites Reyment , 1957 , of the Texanitinae , of which Reymentites Matsu- moto , 1965 , is a ...
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Common terms and phrases
abdominal segments adult Africa Ammonites antennae apex arthropods Barnard beetles brown brownish Cape Natal Cape Point Cape Town carcasses cerci Collected Collignon colour Coniacian d'Orbigny December dorsal view dravidicum Kossmat eggs elytra Family fauna genus Grossouvre hatched Head henniei Holotype inner whorls Labium large numbers larvae left lateral view lobe Locality long setae Lucia Formation mandible margae margin Matsumoto maxilla mesal mesothoracic Middle Coniacian Mollusca natalensis nymphs ocelli ornament outer whorls oval pairs of legs pale Paratype Peroniceras Peroniceras Peroniceras Zuluiceras piceous posterior pronotum Protexanites Pupa R.S. Africana R.S. Pieter Faure radula radula slide reddish Redtenbacher ribs River Santonian setae Shell shiny side South African Museum Sowerby specimens spines spiracles subfamily subtricarinatum suture suture-line Syntypes text-fig Tomlin tridorsatum Schlüter type species umbilical undulatocarinatum Upper Coniacian valves venter ventral view ventrolateral tubercles westphalicum whorl section Wiedmann yellowish Zone zulu Zuluites Zululand