Ratite Eggshells from Lanzarote, Canary Islands

@article{Sauer1972RatiteEF,
  title={Ratite Eggshells from Lanzarote, Canary Islands},
  author={E. G. Franz Sauer and P. Rothe},
  journal={Science},
  year={1972},
  volume={176},
  pages={43 - 45}
}
Struthious and aepyornithoid eggshells from Tertiary calcareous sediments on Lanzarote prove the presence, until about 12 million years ago, of large flightless birds. The calcarenite horizon is recognized as an old land surface. Mesozoic sedimentary rocks in the basement of the volcanic islands of Lanzarote and neighboring Fuerteventura indicate that at least part of the Canary Archipelago is underlain by continental crust. Separation of the eastern Canaries from Africa raight have been by… Expand
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Whilst Insects and Birds of the Canary Islands have been extensively studied, other groups, particularly of the subsoil and freshwater fauna have, as yet, been only very little explored. For an… Expand
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Abstract Ostriches (Struthionidae) are iconic Old-World giant flightless birds. The two living African species represent only a small part of ancient struthionid diversity, which comprises a number… Expand
Canary Islands—Origin and evolution
Hypotheses concerning the origin and evolution of the Canary Islands are discussed. An oceanic origin seems reasonable for the central and western islands, which are of central-volcanic type. A… Expand
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West Africa consists essentially of a Precambrian granitized craton (radiometric ages of 2700 to 1600 m.y.) covered by a thin sedimentary blanket, the oldest sedimentary rocks being as much as 1000… Expand
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This research was supported by the National Research Council of Canada. I thank Prof