Annals of the South African Museum, Volume 83The Museum, 1981 - Natual history |
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Page 88
... slightly deeper than corresponding segments , rounded - quadrate , coxa 4 distinctly excavate posteriorly , 5 and 6 bilobed , 7 rounded - quadrate . Gnathopods 1 and 2 of similar structure but 2 slightly the larger , article 6 slightly ...
... slightly deeper than corresponding segments , rounded - quadrate , coxa 4 distinctly excavate posteriorly , 5 and 6 bilobed , 7 rounded - quadrate . Gnathopods 1 and 2 of similar structure but 2 slightly the larger , article 6 slightly ...
Page 192
... slightly so as to cross the venter transversely . There may be a slight inflexion of the secondaries as they cross the siphonal line . The umbilical wall is steep , with a subrounded umbilical shoulder . The whorl section is rather ...
... slightly so as to cross the venter transversely . There may be a slight inflexion of the secondaries as they cross the siphonal line . The umbilical wall is steep , with a subrounded umbilical shoulder . The whorl section is rather ...
Page 307
... slightly crushed laterally . On this example , the secondary ribbing is rather fine and slightly prorsiradiate , becoming distinctly coarser and more inclined near the peristome . On the penultimate whorl the secondaries are slightly ...
... slightly crushed laterally . On this example , the secondary ribbing is rather fine and slightly prorsiradiate , becoming distinctly coarser and more inclined near the peristome . On the penultimate whorl the secondaries are slightly ...
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Common terms and phrases
abbreviations adoral portion Africa Ammonites Amphipoda Astieria atherstoni Sharpe Barnard Baumberger Besairie bicuspidata bifurcate Bochianites body chamber Böse Broom Cantu Chapa Cape Province Cape Town carapace Cistecephalus Collignon compressed Coxa Crustacea d'Orbigny Decapoda densicostatus dentary diameter Dicynodon Diictodon dimorphism distal Distoloceras dorsal fauna figured final whorl forms genera genus growth stages Hauterivian holotype Imlay inflated inner whorls intercalated ribs Kingoria lateral views lectotype macroconch male margin material Maxilla Maxilliped Olcostephanus Olcostephanus Oudenodon outer whorl parabolae Paramelita paratypes Peponocephala Pereopod peristome posterior primary ribs prominent prorsiradiate secondaries ribs between bundles Riccardi RMT RMT Rogersites rursiradiate primaries secondary ribs segment setae Skull slightly South African Museum Spath species spines Subastieria SUID-AFRIKAANSE MUSEUM Sundays River Sundays River Formation synonym Taraises Formation terminate Thieuloy Type specimen Uitenhage umbilical bullae umbilical seam umbilical shoulder umbilical tubercles umbilical walls umbilicus Upper Valanginian uropod Valanginian Vema venter ventral views whorl section