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Article: Late Ordovician and early Silurian Proetida (Trilobita) from north-western and central Europe

Publication: Palaeontology
Volume: 47
Part: 3
Publication Date: May 2004
Page(s): 557 578
Author(s): R. M. Owens
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OWENS, R. M. 2004. Late Ordovician and early Silurian Proetida (Trilobita) from north-western and central Europe. Palaeontology47, 3, 557–578.

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Species belonging to genera of three families of the Proetida (Proetidae, Rorringtoniidae and Toernquistiidae) are described from the upper Ashgill of southern Sweden, and the same or related species noted from the adjacent parts of northern and central Europe. Proetidae are represented by Paraproetus brevifrons (Angelin), Ogmocnemis irregularis Kielan, Ogmocnemis jaanussoni sp. nov. and Parvigena putealis sp. nov.; it is argued that all belong to the Cornuproetinae, not Tropidocoryphinae where they were previously classified. Ogmocnemis is resurrected for some Upper Ordovician species included previously in Decoroproetus. The rorringtoniid genera Rorringtonia and Madygenia are recognised for the first time in southern Sweden, and it is argued that these are probably closely related, and both are included in the same family; both are recorded for the first time from Silurian (Llandovery) strata. Zetaproetus is claimed to be a junior subjective synonym of Rorringtonia. Solariproetus, first described from north-west China, is assigned to the Toernquistiidae as a late, derived member, and S. prosthemesos sp. nov. is described from late Rawtheyan strata in the Holy Cross Mountains, Skane and the English Lake District. Comments are given on the stratigraphical and palaeogeographical distribution of these taxa.
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