Annals of the South African Museum, Volume 22South African Museum, 1928 - Natual history |
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Page 2
... complete specimen , reference being made to the others when necessary . The specimen ( 1089 S.A. Mus . ) consists of a large block of silicified wood . The pith and primary tissues are crushed so that the arrange- ment of the latter is ...
... complete specimen , reference being made to the others when necessary . The specimen ( 1089 S.A. Mus . ) consists of a large block of silicified wood . The pith and primary tissues are crushed so that the arrange- ment of the latter is ...
Page 3
... complete concentric ring . In one transverse section it was possible to determine the radial extent of five normal rings : starting from the pith , their thicknesses were consecutively 5 , 12 , 12 , 6 , and 12 mm . The first zone of ...
... complete concentric ring . In one transverse section it was possible to determine the radial extent of five normal rings : starting from the pith , their thicknesses were consecutively 5 , 12 , 12 , 6 , and 12 mm . The first zone of ...
Page 8
... complete than the original species of Rhexoxylon africanum , Bancroft , on which the genus was founded , and exhibits some important diagnostic features . The secondary wood has tangential cracks in which are placed numerous small ...
... complete than the original species of Rhexoxylon africanum , Bancroft , on which the genus was founded , and exhibits some important diagnostic features . The secondary wood has tangential cracks in which are placed numerous small ...
Page 9
... complete course of differentiation of the anomalous xylem . It is seen ( cf. Pl . III , fig . 13 ) that the two sides of the crack were originally together ; absolute correspondence cannot be expected , as the thin - walled xylem cells ...
... complete course of differentiation of the anomalous xylem . It is seen ( cf. Pl . III , fig . 13 ) that the two sides of the crack were originally together ; absolute correspondence cannot be expected , as the thin - walled xylem cells ...
Page 12
... complete cylinder of secondary wood , interrupted where the vascular supply passes out to some appendage , but con- sisting in all probability of entirely centrifugally differentiated elements . Internal to this normal ring there has ...
... complete cylinder of secondary wood , interrupted where the vascular supply passes out to some appendage , but con- sisting in all probability of entirely centrifugally differentiated elements . Internal to this normal ring there has ...
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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