Annals of the South African Museum, Volume 22South African Museum, 1928 - Natual history |
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Page 36
... valve ( 6716 S.A. Mus . ) of a species of Orbiculoidea from the farm Driefontein , Clanwilliam , in the South African Museum , which seems to be comparable to the Brazilian species O. collis Clarke † and to O. montis Clarke , from the ...
... valve ( 6716 S.A. Mus . ) of a species of Orbiculoidea from the farm Driefontein , Clanwilliam , in the South African Museum , which seems to be comparable to the Brazilian species O. collis Clarke † and to O. montis Clarke , from the ...
Page 37
... valve is slightly concave , and the pedicle foramen is large , oval , and sunken . The surface of the brachial valve , which is usually the one preserved , is covered with sharp equidistant narrow ridges , usually regular and of equal ...
... valve is slightly concave , and the pedicle foramen is large , oval , and sunken . The surface of the brachial valve , which is usually the one preserved , is covered with sharp equidistant narrow ridges , usually regular and of equal ...
Page 38
... valve flat with small , low , rather suddenly raised , sharp , conical apex , situated at about one - sixth the length of the valve from the posterior end . Surface of valve covered with regular equidistant thin flat concentric laminae ...
... valve flat with small , low , rather suddenly raised , sharp , conical apex , situated at about one - sixth the length of the valve from the posterior end . Surface of valve covered with regular equidistant thin flat concentric laminae ...
Page 40
... valve in the Stellenbosch Museum ( H. 196 Stell . Mus . ) from 2 miles N.E. of Ceres , measuring about 43 mm . in width and 29 mm . in length . It shows the internal characters well , especially the coarse radial pustulation as ...
... valve in the Stellenbosch Museum ( H. 196 Stell . Mus . ) from 2 miles N.E. of Ceres , measuring about 43 mm . in width and 29 mm . in length . It shows the internal characters well , especially the coarse radial pustulation as ...
Page 42
... valve from the Warm Bokkeveld , which precisely agrees with Knod's figure of a Bolivian shell which he attributes to O. chemungensis Conr . Kozlowski * considers this Bolivian shell to belong to Sch . Agassizi ( Hartt ) , and puts ...
... valve from the Warm Bokkeveld , which precisely agrees with Knod's figure of a Bolivian shell which he attributes to O. chemungensis Conr . Kozlowski * considers this Bolivian shell to belong to Sch . Agassizi ( Hartt ) , and puts ...
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Common terms and phrases
Anchiopella axial axis Baini Beil belong Bolivia bone Brit Calmonia Cape Univ Ceres characters Chonetes Cladophlebis Clarke Conularia convex Cryphaeus Dalmanites described devon Devonian Feist 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 Palaeoneilo Paléont Parana parasphenoid Phacops pinnae pinnules pits Plate pleurae pleural lobes posterior preserved Pseudoctenis Pterophyllum pterygoid pygidium rachis radial Reed Rensselaeria resemblance Rhaetic Rhexoxylon Rhinesuchus ribs ring rounded S.A. Mus Salter Sandstone Schwarz segments Seward shell side skull slightly South African Museum species specimen spines Spirifer surface Surv suture Taeniopteris Tapinocephalus TEXT-FIG Thinnfeldia thorax tracheids transverse tubercles Ulrich Upper valve veins venation Walkom width Williams and Breger XXII York State Mus Zeiller