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Article: Radiolaria from the Namurian of Derbyshire

Publication: Palaeontology
Volume: 9
Part: 2
Publication Date: July 1966
Page(s): 319 329
Author(s): B. K. Holdsworth
Addition Information

How to Cite

HOLDSWORTH, B. K. 1966. Radiolaria from the Namurian of Derbyshire. Palaeontology9, 2, 319–329.

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Albaillella pennata sp. nov. and Popofskyellum undulatum Deflandre are described from calcareous concretions at the horizon of the goniatite Reticuloceras paucicrenulatum Bisat and Hudson. The diagnosis of the genus Albaillella is emended. It is suggested that A. pennata and P. undulatum may possibly have been favoured by depths of water greater than those necessary for the proliferation of Namurian spumelline Radiolaria, and that depths favouring these two forms may have been attained only rarely during the deposition of Namurian goniatite bands in Derbyshire and Staffordshire.
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