Silicified Upper Ordovician trilobites from Pai-Khoi, Arctic Russia
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چکیده
منابع مشابه
Phylogenetic and Biogeographic Analysis of Ordovician Homalonotid Trilobites
Cladistic parsimony analysis of the trilobite family Homalonotidae Chapman 1980 produced a hypothesis of relatedness for the group. The family consists of three monophyletic subfamilies, one containing Trimerus Green 1832, Platycoryphe Foerste 1919, and Brongniartella Reed 1918; one containing Plaesiacomia Hawle and Corda 1847 and Colpocoryphe Novák in Perer 1918; and one containing Eohomalonot...
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The Cheiruridae are a diverse group of trilobites and several subfamilies within the clade have been the focus of recent phylogenetic studies. This paper focuses on the relationships of one of those subfamilies, the Ordovician Eccoptochilinae. We analyze sixteen species from six genera within the traditionally defined group, using the pilekiid Anacheirurus frederici as an outgroup. To assess th...
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ژورنال
عنوان ژورنال: Palaeontology
سال: 2009
ISSN: 0031-0239,1475-4983
DOI: 10.1111/j.1475-4983.2009.00910.x