Annals of the South African Museum, Volume 89The Museum, 1982 - Natural history |
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Page 47
... seem to connect with the well - developed axial furrows . Both the L1 and L2 lobes are of more or less constant width ( exsag . ) . The occipital furrow is transverse , and the smooth occipital ring seems to be broadest sagittally . The ...
... seem to connect with the well - developed axial furrows . Both the L1 and L2 lobes are of more or less constant width ( exsag . ) . The occipital furrow is transverse , and the smooth occipital ring seems to be broadest sagittally . The ...
Page 186
... seems to be a weak caninus that disappears in most Monachinae ( it has not been observed by Piérard ( 1971 ) in Leptonychotes weddelli ) ; it is strengthened in the Phocinae s.s. and by parallel evolution , in Mirounga . The Monachinae ...
... seems to be a weak caninus that disappears in most Monachinae ( it has not been observed by Piérard ( 1971 ) in Leptonychotes weddelli ) ; it is strengthened in the Phocinae s.s. and by parallel evolution , in Mirounga . The Monachinae ...
Page 281
... seems to be a typical example of this species . Indeed , even in the present collection , several individuals seem to combine the characters of D. variabile and D. mammillatum aequinodum ( Fig . 15E ) . This tends to suggest that D ...
... seems to be a typical example of this species . Indeed , even in the present collection , several individuals seem to combine the characters of D. variabile and D. mammillatum aequinodum ( Fig . 15E ) . This tends to suggest that D ...
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