Annals of the South African Museum, Volume 89The Museum, 1982 - Natural history |
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Page 47
... ring furrows are very much narrower than the axial rings themselves . The axis broadens ( trans . ) to the third or fourth ring whereafter it tapers slowly to the posterior . The pleural grooves are pronounced , with finer , narrower ...
... ring furrows are very much narrower than the axial rings themselves . The axis broadens ( trans . ) to the third or fourth ring whereafter it tapers slowly to the posterior . The pleural grooves are pronounced , with finer , narrower ...
Page 139
... rings , narrower than the ring furrows , with a very indistinct ninth ring to the posterior . On the best - preserved pygidium ( Fig . 102C - E ) , distinct median tubercles can be seen on the second , third and fifth rings , while the ...
... rings , narrower than the ring furrows , with a very indistinct ninth ring to the posterior . On the best - preserved pygidium ( Fig . 102C - E ) , distinct median tubercles can be seen on the second , third and fifth rings , while the ...
Page 155
... rings . The anterior axial rings are narrower than the ring furrows but after the fourth ring they are broader ( sag . ) than the ring furrows . The anterior 3 ring furrows have well - developed apodemal pits distally . There is no post ...
... rings . The anterior axial rings are narrower than the ring furrows but after the fourth ring they are broader ( sag . ) than the ring furrows . The anterior 3 ring furrows have well - developed apodemal pits distally . There is no post ...
Contents
Family Otarionidae | 14 |
Family Dalmanitidae | 45 |
Family Synphoriidae | 51 |
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Common terms and phrases
2p furrows 9 fig abaxially Acropyga adaxial Anoplolepis anteriorly apodemal pits distally apomorphic arbuteus Lake axial furrows axial rings axis Bainella baini Baldis bulla Burmeisteria herscheli Murchison Calmonia cephalon Clarke Cryphaeus custodiens Dalmanites deep Devonian distinct Douvilleiceras Eldredge & BraniĊĦa exsag external cochlear foramen eyes facial suture faunas figured Francovichia frontal lobe gamkaensis Gamonedaspis genal angles genera genus glabella Gydo Formation Histriophoca holotype Homalonotus internal moulds Kozlowski Kozlowskiaspis L1 lobes lateral view lectotype Lobodontini Malvinokaffric margin material median Metacryphaeus Mirounga Miroungini moderately convex monachines Monachus Monotherium narrow occipital furrow occipital ring ocellus Oosthuizenella Oxytropidoceras Pennaia petrosal Phacopina Phacops Phoca phocids pleural fields pleural grooves posterior border furrows Potamotherium preserved as internal pugnacious pygidial pygidium Reed Rennie Renniella ribs ring furrows sagittal length Schwarz segmentation Semantor semantorids slightly South African Museum specimens strongly subfamily suckers synapomorphy thorax transverse trilobites tubercles Typhloniscus ventral weakly width Wolfart Zone