A new Silurian graptolite, reticuloplectograptus, and its bearing on retiolitid evolution

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dc.contributor.author Kozlowska, Anna
dc.contributor.author Bates, Denis E. B.
dc.contributor.author Piras, Sergio
dc.date.accessioned 2011-06-13T08:46:44Z
dc.date.available 2011-06-13T08:46:44Z
dc.date.issued 2011-06-13
dc.identifier.citation Kozlowska , A , Bates , D E B & Piras , S 2011 , ' A new Silurian graptolite, reticuloplectograptus, and its bearing on retiolitid evolution ' Palaeontology , vol 53 , no. 6 , pp. 1411-1417 . , 10.1111/j.1475-4983.2010.01014.x en
dc.identifier.issn 0031-0239
dc.identifier.other PURE: 166827
dc.identifier.other dspace: 2160/7044
dc.identifier.uri http://hdl.handle.net/2160/7044
dc.description Kozlowska, A., Bates, D. E. B., Piras, S. (2010). A new Silurian graptolite, reticuloplectograptus, and its bearing on retiolitid evolution. Palaeontology, 53 (6), 1411-1417. en
dc.description.abstract The retiolitid graptolite Reticuloplectograptus serpaglii gen. et sp. nov. from the Gorstian, lower Ludlow, has been found in two localities: the Bartoszyce borehole of Poland (Baltica), and the Bykos. section, Barrandian, Czech Republic (PeriGondwanan Europe). The Polish material is isolated and was studied under the SEM. The main characters of Reticuloplectograptus are similar to those of Plectograptus: an asymmetrical ancora, simple ancora umbrella with an incompletely developed rim and parallel ventral walls with mid-ventral lists. The paired genicular processes of the new species are similar to but much wider than those of Plectograptus trijunctus and Plectograptus robustus. The main differences between the new genus and Plectograptus are the dense ancora sleeve wall and small proximal lateral orifices of the former. These primitive characters suggest that Reticuloplectograptus might be ancestral to genera with strong reduction in the proximal end, such as Plectograptus, Valentinagraptus and Kirkigraptus. However, Reticuloplectograptus appeared stratigraphically later than Plectograptus, indicating that this aspect of retiolitid evolution is more complicated, needing further study. en
dc.format.extent 7 en
dc.language.iso eng
dc.relation.ispartof Palaeontology en
dc.subject silurian en
dc.subject Ludlow en
dc.subject graptolites en
dc.subject Retiolitidae en
dc.subject Reticuloplectograptus en
dc.subject evolution en
dc.title A new Silurian graptolite, reticuloplectograptus, and its bearing on retiolitid evolution en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1111/j.1475-4983.2010.01014.x
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Other IGES Research en
dc.description.status Peer reviewed en


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