Annals of the South African Museum, Volume 92The Museum, 1984 - Natual history |
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Page 162
... whorls the umbilical tubercles may enlarge considerably and migrate away from the umbilical edge . Strength of ... whorls are concerned . The specimen does , however , show the typical common and distinctive bifurca- tions on the outer ...
... whorls the umbilical tubercles may enlarge considerably and migrate away from the umbilical edge . Strength of ... whorls are concerned . The specimen does , however , show the typical common and distinctive bifurca- tions on the outer ...
Page 215
... whorls of the specimens available ( nearly all of them are still septate ) , all ornament weakens and the whorls become nearly smooth . Discussion P. ( Zuluiceras ) undulatocarinatum continues the trend towards increased involution and ...
... whorls of the specimens available ( nearly all of them are still septate ) , all ornament weakens and the whorls become nearly smooth . Discussion P. ( Zuluiceras ) undulatocarinatum continues the trend towards increased involution and ...
Page 219
... whorls , but distinct lateral keels are not developed . On the outer whorls of the phragmocone these depressions virtually disappear and the venter is unicarinate without sulci . Ornament on the inner whorls is as in P. ( Z ...
... whorls , but distinct lateral keels are not developed . On the outer whorls of the phragmocone these depressions virtually disappear and the venter is unicarinate without sulci . Ornament on the inner whorls is as in P. ( Z ...
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Common terms and phrases
abdominal segments adult Africa Ammonites antennae apex arthropods Barnard beetles besairiei 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 Prionocycloceras pronotum Protexanites Pupa R.S. Africana R.S. Pieter Faure radula radula slide reddish Redtenbacher ribs River SAN DIEGO Santonian setae Shell shiny side South African Museum Sowerby 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 yellowish zulu Zuluites Zululand