Annals of the South African Museum, Volume 89The Museum, 1982 - Natural history |
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Page 88
... grooves , deepest adaxially , and show distinct geniculations at the fulcra . Pygidium . The pygidium is almost ... grooves are broad and rather deep , tapering abaxially to become obsolete before the distal terminations of the pleurae ...
... grooves , deepest adaxially , and show distinct geniculations at the fulcra . Pygidium . The pygidium is almost ... grooves are broad and rather deep , tapering abaxially to become obsolete before the distal terminations of the pleurae ...
Page 130
... grooves and are separated by distinct interpleural furrows . Distally the pleurae bear short , blunt posteriorly ... grooves , and the interpleural furrows are narrow and indistinct . The pleural grooves do not reach the pygidial margin ...
... grooves and are separated by distinct interpleural furrows . Distally the pleurae bear short , blunt posteriorly ... grooves , and the interpleural furrows are narrow and indistinct . The pleural grooves do not reach the pygidial margin ...
Page 139
... grooves . The pleurae have short , posteriorly directed distal spines and are separated by well - defined , narrow interpleural grooves . At the fulcral axis , the posterior moiety of each pleura develops a fulcral spine of variable ...
... grooves . The pleurae have short , posteriorly directed distal spines and are separated by well - defined , narrow interpleural grooves . At the fulcral axis , the posterior moiety of each pleura develops a fulcral spine of variable ...
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