Childs, A. (1969). Upper Jurassic Rhynchonellid Brachiopods From Northwestern Europe. Bulletin of the British Museum (Natural History), Geology. 6(6): 3-119.
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Childs, A.
1969
Upper Jurassic Rhynchonellid Brachiopods From Northwestern Europe
Bulletin of the British Museum (Natural History), Geology