Late Carboniferous colonial Rugosa (Anthozoa) from Alaska

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Autor principal: J. Fedorowski
Formato: Artículo científico
Lenguaje:en
Publicado: Universitat de Barcelona 2014
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author J. Fedorowski
author_facet J. Fedorowski
contents Late Carboniferous colonial Rugosa (Anthozoa) from Alaska J. Fedorowski C.H. Stevens Ciencias de la Tierra Alaska Alaska Phylogeny Phylogeny Palaeogeography Late Carboniferous colonial corals from the Moscovian Saginaw Bay Formation and the underlying Bashkirian crinoidl limestone exposed on northeastern Kuiu Island and a nearby islet, part of the Alexander terrane in southeastern Alaska, are described and illustrared for the first time, and are supplemented by revision, redescription and reillustration of most Atokan specimens from Brooks Range, northerm Alaska, first described by Armstrong (1972). New taxa from the Kuiu Island area include the new species Paraheristschioides katvalae and the new genus and species Arctistrotion variabilis, as well as the new Subfamily Arctistrotioninae. The corals Corwenia jagoensis and Lithostrotionella wahooensis of Armstrong (1972) also are redefined and redescribed. Paraheristschioides jagoensis is based on the holotype of `C´. jagoensis. P. compositus sp. nov. is based on a "paratype" of `C´. jagoensis. In addition to a redefinition and redescription of `L´.wahooensis as Arctistrotion wahooense, one "paratype" of that species is described as A. simplex sp. nov. The phylogeny and suspected relationships of some fasciculate Carboniferous Rugos also are discussed. Based on relationships and similarities within the Late Carboniferous Rugosa from the Brooks Range, Kuiu Island and the eastern Klamath terrane, we conclude that all three areas were geographically close enough at that time so that larvae were occasionally dispersed by oceanic currents. Distances between these areas, however, may hve been so great and/or isolation so long that individual speciation occurred in all of various locations. That hypothetical situation is reflected by a common generic, but not a specific, content of the particular faunas. 2014 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50531655006 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.3 Vol.12
format Artículo científico
id redalyc_50531655006
institution Redalyc
language en
publishDate 2014
publisher Universitat de Barcelona
spellingShingle Late Carboniferous colonial Rugosa (Anthozoa) from Alaska
J. Fedorowski
Ciencias de la Tierra
Alaska
Alaska
Phylogeny
Phylogeny
Palaeogeography
Late Carboniferous colonial Rugosa (Anthozoa) from Alaska J. Fedorowski C.H. Stevens Ciencias de la Tierra Alaska Alaska Phylogeny Phylogeny Palaeogeography Late Carboniferous colonial corals from the Moscovian Saginaw Bay Formation and the underlying Bashkirian crinoidl limestone exposed on northeastern Kuiu Island and a nearby islet, part of the Alexander terrane in southeastern Alaska, are described and illustrared for the first time, and are supplemented by revision, redescription and reillustration of most Atokan specimens from Brooks Range, northerm Alaska, first described by Armstrong (1972). New taxa from the Kuiu Island area include the new species Paraheristschioides katvalae and the new genus and species Arctistrotion variabilis, as well as the new Subfamily Arctistrotioninae. The corals Corwenia jagoensis and Lithostrotionella wahooensis of Armstrong (1972) also are redefined and redescribed. Paraheristschioides jagoensis is based on the holotype of `C´. jagoensis. P. compositus sp. nov. is based on a "paratype" of `C´. jagoensis. In addition to a redefinition and redescription of `L´.wahooensis as Arctistrotion wahooense, one "paratype" of that species is described as A. simplex sp. nov. The phylogeny and suspected relationships of some fasciculate Carboniferous Rugos also are discussed. Based on relationships and similarities within the Late Carboniferous Rugosa from the Brooks Range, Kuiu Island and the eastern Klamath terrane, we conclude that all three areas were geographically close enough at that time so that larvae were occasionally dispersed by oceanic currents. Distances between these areas, however, may hve been so great and/or isolation so long that individual speciation occurred in all of various locations. That hypothetical situation is reflected by a common generic, but not a specific, content of the particular faunas. 2014 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50531655006 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.3 Vol.12
title Late Carboniferous colonial Rugosa (Anthozoa) from Alaska
topic Ciencias de la Tierra
Alaska
Alaska
Phylogeny
Phylogeny
Palaeogeography
url https://www.redalyc.org/articulo.oa?id=50531655006