Agnostid trilobites from the Ordovician of Jamtland, Sweden
Titel:
Agnostid trilobites from the Ordovician of Jamtland, Sweden
Auteur:
Ahlberg, Per
Verschenen in:
GFF
Paginering:
Jaargang 110 (1988) nr. 3 pagina's 267-278
Jaar:
1988-09-15
Inhoud:
Agnostid trilobites from the Lower and Middle Ordovician in Jamtland, central Sweden, are described. The following taxa are recognized: Arthrorhachis elspethi Raymond, 1925, Geragnostus spp. aff. fabius (Billings, 1865), G. cf. clusus Whittington, 1963, and G. spp. The stratigraphical range of Arthrorhachis elspethi in the Southern Appalachians and in Jamtland is discussed, and it is concluded that all its known occurrences are in Llandeilian-lower Caradocian strata. Trinodus armatus Thorslund, 1940, from the Caradocian Dalby Limestone in the central Lockne area, Jamtland, is considered to be a subjective junior synonym of Arthrorhachis elspethi.
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