Annals of the South African Museum, Volume 22South African Museum, 1928 - Natual history |
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Page 34
... rounded fenestrules longer than wide . Traces of cells can be seen on the branches , and in a length of 6 mm . there are 6-7 fenestrules . Monotrypa ? sp . On the same piece of rock ( 11358 ) from Leo Hoek , in the British Museum , as ...
... rounded fenestrules longer than wide . Traces of cells can be seen on the branches , and in a length of 6 mm . there are 6-7 fenestrules . Monotrypa ? sp . On the same piece of rock ( 11358 ) from Leo Hoek , in the British Museum , as ...
Page 36
... rounded equidistant radial lines are visible also on the anterior and posterior slopes of the valve , but they belong to an inner layer of the shell , as may be plainly seen below the apex on the posterior face . Orbiculoidea ...
... rounded equidistant radial lines are visible also on the anterior and posterior slopes of the valve , but they belong to an inner layer of the shell , as may be plainly seen below the apex on the posterior face . Orbiculoidea ...
Page 38
... 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 at ...
... 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 at ...
Page 43
... rounded thread - like radii , increasing by intercalation and bifurcation to 100-120 on margin , with one stronger median radius . Pedicle valve with short thin median septum , and pair of short broadly flabelliform rounded diductors ...
... rounded thread - like radii , increasing by intercalation and bifurcation to 100-120 on margin , with one stronger median radius . Pedicle valve with short thin median septum , and pair of short broadly flabelliform rounded diductors ...
Page 50
... rounded ribs , becoming weaker near the cardinal angles , apart even from the ornamentation , serve to distinguish it , at any rate as a variety , though internal casts are generally difficult to identify . The ornamentation is ...
... rounded ribs , becoming weaker near the cardinal angles , apart even from the ornamentation , serve to distinguish it , at any rate as a variety , though internal casts are generally difficult to identify . The ornamentation is ...
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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