Annals of the South African Museum, Volume 67South African Museum, 1976 - Natual history |
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Page 207
... ridge , and behind by a broader dorsal ridge , rendering posterior margin bicuspidate ; this sulcus is crossed by lunulate , comarginal ridges , which form small squamose denticles along the crest of the umbonal ridge , and two similar ...
... ridge , and behind by a broader dorsal ridge , rendering posterior margin bicuspidate ; this sulcus is crossed by lunulate , comarginal ridges , which form small squamose denticles along the crest of the umbonal ridge , and two similar ...
Page 215
... ridge , but no distinct angle , posterior face moderately truncate . Greater part of shell smooth , except for growth lines , posterior face corrugated by fine , wavy , concentric ridges , with a narrow area adjacent to the umbonal ridge ...
... ridge , but no distinct angle , posterior face moderately truncate . Greater part of shell smooth , except for growth lines , posterior face corrugated by fine , wavy , concentric ridges , with a narrow area adjacent to the umbonal ridge ...
Page 223
... ridge very feeble , often not visible in right valve , in left valve bordered behind by a shallow trough , followed by a second feeble ridge . Hinge in each valve with two ridge - like cardinals , of which the anterior ones are the ...
... ridge very feeble , often not visible in right valve , in left valve bordered behind by a shallow trough , followed by a second feeble ridge . Hinge in each valve with two ridge - like cardinals , of which the anterior ones are the ...
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Common terms and phrases
abbreviated adductor Africa Agassiz Amphipoda antenna apex apically author's name bearing Beaufort Series bicuspidata British Museum Natural Broom Brough Cape Town capensis Chelydontops Chevreux crocodilian Crustacea Debrenne dentary Description Diagnosis dicynodonts DIEGO distal Distribution dorsal view Dwyka elongate Endemic Euparkeria False Bay Family femur figures flagellum forms Gardiner genus gnathopod Haughton Holotype inner ramus K. H. Barnard khaki sand lateral length living crocodiles lobe lower mandibular material maxilla maxilliped medial muraille externe muscle Museum Natural History Natal Notochampsa oblique Orthosuchus Orthosuchus stormbergi outer ramus palate palm palp paratypes peduncle peraeonal segment peraeopod pereiopods pleo-telson pleon pleopod posterior margin posteriorly postero-distally premaxilla propodus protosuchians Protosuchus pterygoid quadrate Records ribs ridge scutes serrate setae skull slender South African Museum Sowerby species specimen spines squamosal Stebbing Steneosaurus suarezensis subequal surface suture Synonymy teeth telson temporal fenestra thecodontians tooth Triassic Upper uropod ventral vertebrae Woodward