Annals of the South African Museum, Volume 7South African Museum, 1913 - Natual history |
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Page 10
... spirals ; the zoocia are immersed . Three ill - preserved specimens from among the East London material are doubtfully referred to this species . All are very short fragments of stout branches , and , in so far as the zoocial characters ...
... spirals ; the zoocia are immersed . Three ill - preserved specimens from among the East London material are doubtfully referred to this species . All are very short fragments of stout branches , and , in so far as the zoocial characters ...
Page 20
... spirals ; but these are only rows of three , and the series do not continue on the half of the branch not shown ( p . 415 ) . 12. Entalophora echinata ( Römer ) . x 12. Part of a worn zoarium ( p . 415 ) . 13. Spiropora verticillata ...
... spirals ; but these are only rows of three , and the series do not continue on the half of the branch not shown ( p . 415 ) . 12. Entalophora echinata ( Römer ) . x 12. Part of a worn zoarium ( p . 415 ) . 13. Spiropora verticillata ...
Page 164
... ( spiral ) ornamenting ridges , crossed by ridges of growth , may be detected . The spiral angle is about 85 ° . Dimensions.- Height ...... Greatest width of base ... . ...... .. Height of aperture Approximate breadth of aperture ...
... ( spiral ) ornamenting ridges , crossed by ridges of growth , may be detected . The spiral angle is about 85 ° . Dimensions.- Height ...... Greatest width of base ... . ...... .. Height of aperture Approximate breadth of aperture ...
Page 165
... spiral angle varies somewhat , and averages about 70 ° . The last two whorls expand rapidly . The spiral suture is situated on the lower marginal keel of the whorls . The mouth has an angular outer lip , corresponding with the form of ...
... spiral angle varies somewhat , and averages about 70 ° . The last two whorls expand rapidly . The spiral suture is situated on the lower marginal keel of the whorls . The mouth has an angular outer lip , corresponding with the form of ...
Page 166
... spiral keels , while the base of the body - whorl is ornamented by several strong , well - spaced keels . Further points of distinction are the fine spiral lines which ornament the whorls , and the wider spiral angle . A form which ...
... spiral keels , while the base of the body - whorl is ornamented by several strong , well - spaced keels . Further points of distinction are the fine spiral lines which ornament the whorls , and the wider spiral angle . A form which ...
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Common terms and phrases
Acanthodiscus adult Ammonites angle aperture Aptian Astarte atherstoni Sharpe baini bank of Sunday's bone breadth Broom carinal characters closely Coega collection comparison conocardiiformis convex costate Cutch Cynodonts d'Orbigny developed diameter dorsal elongated Eriphyla escutcheon Exogyra fauna figure flank flattened fossils frontal genus Geol Geological German East Africa Graaff-Reinet groove Hauterivian height herzogi Holcostephanus holubi imbricata Jurassic keel Kitchin Krauss left valve length less Lower Cretaceous Lycett margin Massospondylus narrow Neocomian Neumayr occur Oolitic Oomia beds ornamentation outline Pareiasaurus Pavlow Pecten Plate posterior posteriorly preserved represented resemblance ribs ridges right valve Rogers and Schwarz rogersi sculpture shell similar slightly South African Museum species specimen spiral stage Stoliczka stowi Sunday's River surface suture Tate Tate's transverse Trigonia Trigonia ventricosa tubercles Uhlig Uitenhage Uitenhage beds Uitenhage Series umbilical umbilicus umbo umbonal region upper W. T. Blanford whorl zoarium Zwartkop's River