Annals of the South African Museum, Volume 89The Museum, 1982 - Natural history |
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Page 16
... species , the only possibility of confusion of Malima- naspis ? dereimsi lies with Ormistoniella malaca ( Lake ) . The latter species has , however , an urceolate glabella that lacks the deep 1p furrows and well- developed pre ...
... species , the only possibility of confusion of Malima- naspis ? dereimsi lies with Ormistoniella malaca ( Lake ) . The latter species has , however , an urceolate glabella that lacks the deep 1p furrows and well- developed pre ...
Page 72
South African Museum. Discussion This species differs from all described species of Calmonia in features of the glabellar segmentation and in possessing only 4 pairs of pleural spines to the pygidium . It is also close to Pennaia ...
South African Museum. Discussion This species differs from all described species of Calmonia in features of the glabellar segmentation and in possessing only 4 pairs of pleural spines to the pygidium . It is also close to Pennaia ...
Page 291
... species of Oxytropidoceras , the history of this taxon is one of parallel evolution between two species groups . The O. mirapelianum ( d'Orbigny ) ( Fig . 14D - E herein ) plexus comprises O. mirapelianum ( d'Orbigny ) , O. evansi ...
... species of Oxytropidoceras , the history of this taxon is one of parallel evolution between two species groups . The O. mirapelianum ( d'Orbigny ) ( Fig . 14D - E herein ) plexus comprises O. mirapelianum ( d'Orbigny ) , O. evansi ...
Contents
Family Otarionidae | 14 |
Family Dalmanitidae | 45 |
Genus Gamonedaspis | 54 |
Copyright | |
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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 fauna Francovichia frontal lobe gamkaensis Gamonedaspis genal angles genera genus geol glabella 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 Muizon narrow occipital furrow occipital ring ocellus Oosthuizenella Oxytropidoceras Pennaia petrosal Phacopina Phacops Phoca phocids pleural fields pleural grooves post-axial posterior border furrows Potamotherium preserved as internal pugnacious pygidial pygidium Reed Rennie Renniella ribs ring furrows sagittal length Schwarz seals segmentation Semantor semantorids slightly South African Museum specimens strongly subfamily suckers synapomorphy thorax transverse trilobites tubercles Typhloniscus ventral weakly width Wolfart