Annals of the South African Museum, Volume 89The Museum, 1982 - Natural history |
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Page 195
... Monachus is likely to have poor underwater hearing , improved , however , by the presence of an external cochlear foramen and by a posteriorly exposed petrosal . These struc- tures otherwise offer little resistance to high pressure and ...
... Monachus is likely to have poor underwater hearing , improved , however , by the presence of an external cochlear foramen and by a posteriorly exposed petrosal . These struc- tures otherwise offer little resistance to high pressure and ...
Page 197
... Monachus monachus , M. tropicalis , and M. schauinslandi , which live respectively in the Mediterranean and on the Mauritanian coast , in the Carib- bean , and around Hawaii . The fossil genera of this tribe are Pristiphoca and ...
... Monachus monachus , M. tropicalis , and M. schauinslandi , which live respectively in the Mediterranean and on the Mauritanian coast , in the Carib- bean , and around Hawaii . The fossil genera of this tribe are Pristiphoca and ...
Page 202
... Monachus and Pliophoca , the latter obviously related to the monk seals . This group , therefore includes representatives of the three tribes of Monachinae defined here . The Hawaiian Islands group , which includes the living species ...
... Monachus and Pliophoca , the latter obviously related to the monk seals . This group , therefore includes representatives of the three tribes of Monachinae defined here . The Hawaiian Islands group , which includes the living species ...
Contents
Family Otarionidae | 14 |
Family Dalmanitidae | 45 |
Family Synphoriidae | 51 |
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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