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The Upper Tremadocian (Ordovician) Graptolite Bryograptus: taxonomy, biostratigraphy and biogeography
The Upper Tremadocian (Ordovician) Graptolite Bryograptus: taxonomy, biostratigraphy and biogeography
- Publication Year :
- 2010
- Publisher :
- The Paleontological Association, 2010.
-
Abstract
- The taxonomy, biostratigraphical and palaeogeographical distribution of the Lower Ordovician graptolite genus Bryograptus is evaluated. Bryograptus is recognized as a distinct triradiate anisograptid with a multiramous, pendent rhabdosome. The species of the genus Bryograptus can be interpreted as shallow water faunal elements with a strongly limited biogeographical distribution to the Atlantic Faunal Realm. Bryograptus is restricted to a narrow interval in the Upper Tremadocian, the Bryograptus Biozone of Scandinavia and South America (Argentina), making it a taxon with a high potential for precise biostratigraphical correlations. The proximal end development can be used to differentiate the genus Bryograptus from other pendent multiramous graptoloid genera with a homoplastic rhabdosome development. Characteristics of the proximal end development and structure easily differentiate these genera in relief specimens, but not in flattened material. Fil: Maletz, Jörg. Saint Francis Xavier University; Canadá Fil: Egenhoff, Sven. State University Of Colorado - Fort Collins; Estados Unidos Fil: Alonso, Ricardo Narciso. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.od......3498..952138d8466f06aaa2337fe43c830a8a
- Full Text :
- https://doi.org/10.1111/j.1475-4983.2009.00920.x/abstract