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- W2058161325 abstract "Echinochara Peck, 1957 is a poorly known charophyte genus from the Upper Jurassic and Lower Cretaceous of the United States and Europe. Its fossil record is currently limited to two species, Echinochara spinosa Peck, 1957 and Echinochara peckii (Mädler, 1952) nov. comb. Grambast, 1956 emend. Schudack, 1993, which have obscure phylogenetic relationships. A third species of this genus, Echinochara triplicata nov. sp., is described here from the Lower Albian of Jebel Koumine (Central Tunisia) and is hypothesized to derive from the Barremian-Aptian morphotypes of Echinochara peckii. The new species represents the first record of the genus in Africa and its more recent record worldwide. It occurs along with the clavatoraceans: Clavator harrisii zavialensis and Atopochara trivolvis trivolvis and provides an additional tool for the biostratigraphic characterization of non-marine Albian of Europe and North Africa. Echinochara Peck, 1957 est un genre de charophytes très peu connu dans le Jurassique supérieur et le Crétacé inférieur des États-Unis et de l’Europe. Jusqu’à présent, l’enregistrement de ce genre fossile est limité uniquement à deux espèces, Echinochara spinosa Peck, 1957 et Echinochara peckii (Mädler, 1952) nov. comb. Grambast, 1956 emend. Schudack, 1993, dont les relations phylogénétiques demeurent encore mal élucidées. Une troisième espèce de ce genre, Echinochara triplicata nov. sp., est décrite ici dans l’Albien inférieur de Jebel Koumine (Tunisie Centrale) et permet d’émettre l’hypothèse qu’elle dérive à partir des morphotypes du Barrémien-Aptien d’Echinochara peckii. La nouvelle espèce représente le premier enregistrement du genre en Afrique, et la forme la plus récente dans le monde. Elle a été trouvée en association avec les Clavatoracées, Clavator harrisii zavialensis et Atopochara trivolvis trivolvis et fournit alors un outil supplémentaire pour la caractérisation biostratigraphique de l’Albien non-marin de l’Europe et l’Afrique du Nord." @default.
- W2058161325 created "2016-06-24" @default.
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- W2058161325 date "2012-07-01" @default.
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- W2058161325 title "Echinochara triplicata sp. nov. (Clavatoraceae, fossil Charophyta) from the Lower Albian of Tunisia" @default.
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- W2058161325 doi "https://doi.org/10.1016/j.crpv.2012.05.001" @default.
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