Annals of the South African Museum, Volume 89The Museum, 1982 - Natural history |
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Page 8
... convex axis is rather broad , tapering fairly rapidly to the posterior , and comprises 14-16 distinct axial rings . In the Type II pygidia ( Fig . 7C ) , the axis is relatively much narrower , more convex and tapers less strongly to the ...
... convex axis is rather broad , tapering fairly rapidly to the posterior , and comprises 14-16 distinct axial rings . In the Type II pygidia ( Fig . 7C ) , the axis is relatively much narrower , more convex and tapers less strongly to the ...
Page 87
... convex , semicircular to semi- elliptical in outline , and more than twice as wide as the sagittal length . The glabella expands evenly towards the anterior with deep , straight axial furrows . The inflated frontal lobe is coarsely ...
... convex , semicircular to semi- elliptical in outline , and more than twice as wide as the sagittal length . The glabella expands evenly towards the anterior with deep , straight axial furrows . The inflated frontal lobe is coarsely ...
Page 130
... convex , with a fairly distinct ful- crum ; they are divided into prominent anterior and posterior moieties by deep pleural grooves and are separated by distinct interpleural furrows . Distally the pleurae bear short , blunt posteriorly ...
... convex , with a fairly distinct ful- crum ; they are divided into prominent anterior and posterior moieties by deep pleural grooves and are separated by distinct interpleural furrows . Distally the pleurae bear short , blunt posteriorly ...
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 & Braniša 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