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Article: Upper Llandeilo trilobites from the Berwyn Hills, North Wales

Publication: Palaeontology
Volume: 5
Part: 4
Publication Date: January 1963
Page(s): 790 816
Author(s): A. Roy MacGregor
Addition Information

How to Cite

MACGREGOR, A. 1963. Upper Llandeilo trilobites from the Berwyn Hills, North Wales. Palaeontology5, 4, 790–816.

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Sixteen species in twelve genera are described including the following new species, Bumastus powis-ensis, Marrolithus magnificus, M. lirellatus, Atractopyge sedgwicki, A. williamsi, and Metopolichas contractus. The fauna was collected from three small inliers of Llandeilo rocks in the Berwyn Dome, North Wales. There is a large indigenous element in the fauna, and an exotic element, in which two species appear to be from the Appalachian province, and one might possibly be from the Bohemian province. Two species are at present cryptogenetic.
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