Annals of the South African Museum, Volume 22South African Museum, 1928 - Natual history |
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Page 17
... angles to the long axis of the tracheid . They may be arranged widely separated in single file or may be contiguous . A biseriate arrangement is also a regular feature of this wood , and then the pits may be either opposite or alternate ...
... angles to the long axis of the tracheid . They may be arranged widely separated in single file or may be contiguous . A biseriate arrangement is also a regular feature of this wood , and then the pits may be either opposite or alternate ...
Page 30
... angles of the theca ; the second series consists of 4 shorter transversely subquadrate plates ; the third series of 4 larger subrectangular plates of which the laterals are oblong and larger than the median ones ; the fourth series of 4 ...
... angles of the theca ; the second series consists of 4 shorter transversely subquadrate plates ; the third series of 4 larger subrectangular plates of which the laterals are oblong and larger than the median ones ; the fourth series of 4 ...
Page 31
... angles of the theca in A. disparilis as in Placocystis and in our Bokkeveld species , and the stem structure is very similar . * Schuchert , " Siluric and Devonic Cystidea , " Smithsonian Miscell . Coll . , vol . xvii , pt . 2 , 1904 ...
... angles of the theca in A. disparilis as in Placocystis and in our Bokkeveld species , and the stem structure is very similar . * Schuchert , " Siluric and Devonic Cystidea , " Smithsonian Miscell . Coll . , vol . xvii , pt . 2 , 1904 ...
Page 38
... angles rounded ; hinge - line short , about half width of shell . Pedicle valve gently convex ; beak small , elevated , with lateral edges inclined at about 120 ° ; hinge - area triangular , of moderate size , concave , inclined nearly ...
... angles rounded ; hinge - line short , about half width of shell . Pedicle valve gently convex ; beak small , elevated , with lateral edges inclined at about 120 ° ; hinge - area triangular , of moderate size , concave , inclined nearly ...
Page 42
... angles , and it may belong to another species . Chonetes falklandicus , Morris and Sharpe . 1903. Chonetes falklandicus Reed , Ann . S. Afr . Mus . , vol . iv , pt . 3 , p . 171 , pl . xx , figs . 9 , 10 ( 136 , 127 S.A. Mus . ) ( for ...
... angles , and it may belong to another species . Chonetes falklandicus , Morris and Sharpe . 1903. Chonetes falklandicus Reed , Ann . S. Afr . Mus . , vol . iv , pt . 3 , p . 171 , pl . xx , figs . 9 , 10 ( 136 , 127 S.A. Mus . ) ( for ...
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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