Palaeontologia africana

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Author: search.filters.author.Sidor, Christian ASubject: search.filters.subject.Madumabisa Mudstone Formation

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    The first biarmosuchian from the upper Madumabisa Mudstone Formation (Luangwa Basin) of Zambia
    (2015-04-01) Sidor, Christian A;
    This contribution reports the first occurrence of a biarmosuchian therapsid from the upper Madumabisa Mudstone Formation of the Luangwa Basin of northeastern Zambia. Although incomplete, the fossil preserves diagnostic features of post-Biarmosuchus biarmosuchians, such as the presence of a preparietal bone and parasagittal ridges on the basicranial rami of the pterygoids, that allow its unambiguous referral to this group. Based primarily on the record of dicynodonts, the upper Madumabisa Mudstone assemblage can be correlated with the Cistecephalus Assemblage Zone of South Africa. During this interval, the tetrapod faunas of the Karoo and Luangwa basins were remarkably similar and likely characterized by frequent biotic interchange.