Annals of the South African Museum, Volume 22South African Museum, 1928 - Natual history |
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Page 30
... median basals and a pair of narrower subtriangular lateral basals forming the lower angles of the theca ; the second series consists of 4 shorter transversely subquadrate plates ; the third series of 4 larger subrectangular plates of ...
... median basals and a pair of narrower subtriangular lateral basals forming the lower angles of the theca ; the second series consists of 4 shorter transversely subquadrate plates ; the third series of 4 larger subrectangular plates of ...
Page 32
... median notch or groove . Fine concentric lines parallel to the lateral edges can also be detected in one place . The length of this plate is 19 mm . and its width 13 mm . The only recorded example of a blastoid from the Devonian of the ...
... median notch or groove . Fine concentric lines parallel to the lateral edges can also be detected in one place . The length of this plate is 19 mm . and its width 13 mm . The only recorded example of a blastoid from the Devonian of the ...
Page 38
... median sulcus . Surface of valves covered with numerous primary subangular equal riblets , gently curved back near cardinal angles , increasing by rare inter calation of shorter ribs to 50-60 on margins . * Barrois , Pruvost , and ...
... median sulcus . Surface of valves covered with numerous primary subangular equal riblets , gently curved back near cardinal angles , increasing by rare inter calation of shorter ribs to 50-60 on margins . * Barrois , Pruvost , and ...
Page 43
... median radius . Pedicle valve with short thin median septum , and pair of short broadly flabelliform rounded diductors about one - fourth the length of the valve ; interior covered with radial lines of small equal equidistant punctae ...
... median radius . Pedicle valve with short thin median septum , and pair of short broadly flabelliform rounded diductors about one - fourth the length of the valve ; interior covered with radial lines of small equal equidistant punctae ...
Page 44
... median rib in ours recalls Ch . aroostookensis Clarke † from the Chapman Sandstone of Maine . Some of Clarke's Brazilian specimens attributed to Ch . falklandicus appear to bear a considerable resemblance to our form . Chonetes Stübeli ...
... median rib in ours recalls Ch . aroostookensis Clarke † from the Chapman Sandstone of Maine . Some of Clarke's Brazilian specimens attributed to Ch . falklandicus appear to bear a considerable resemblance to our form . Chonetes Stübeli ...
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Common terms and phrases
Anchiopella axial axis Baini Beil belong Bolivia bone Brit Calmonia Cape Univ capensis Ceres characters Chonetes Cladophlebis Clarke Conularia convex Cryphaeus Dalmanites described devon Devonian figs figured Flora Foss fossil frond frontal genal angles genus Geol Ginkgoites glabella granules head-shield Herscheli Homalonotus Ibid internal cast Knod Kozlowski lateral furrows length margin median Modiomorpha Molteno Molteno Beds Neues Jahrb Nuculites oblique Orbiculoidea Palaeoneilo Paléont Parana Phacops pinnae pinnules pits Plate pleurae pleural lobes posterior preserved Pseudoctenis Pterophyllum pygidium rachis radial Reed Rensselaeria resemblance Rhaetic Rhexoxylon Rhinesuchus ribs ring rounded S.A. Mus Salter Sandstone Schwarz secondary wood segments Seward shell side skull slightly South African Museum species specimen spines Spirifer surface Surv suture Taeniopteris TEXT-FIG Thinnfeldia thorax tracheids transverse tubercles Ulrich Upper valve veins venation Walkom width Williams and Breger XXII York State Mus Zeiller