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From
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To
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Geolocation
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Author - title
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Year
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|---|---|---|---|---|---|
| details | Early Devonian | Canada(Ontario) | Deunff,J. On a microplankton from the Devonian of Canada containing some new types of Hystrichosphaerids. | 1954 | |
| details | Silurian | Tertiary | Nd | Deflandre,G. Groups Incertae Sedis.Hystrichospheres. chitinozoans. | 1952 |
| original | Senonian | France(Paris Basin) | Deflandre,G. Microfossils from Cretaceous Flints.Second Part | 1937 |