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A new trigonotarbid arachnid from the Coal Measures of Hagen-Vorhalle, Germany

Authors: Dunlop,J. A.; Brauckmann,C.;

A new trigonotarbid arachnid from the Coal Measures of Hagen-Vorhalle, Germany

Abstract

Abstract. A new trigonotarbid (Arachnida: Trigonotarbida: Trigonotarbidae) is described as Archaeomartus roessleri n. sp. from the Upper Carboniferous (Pennsylvanian; Namurian B, higher Marsdenian) of Hagen-Vorhalle, Germany. Originally assigned to Trigonotarbus johnsoni Pocock, 1911, our new fossil has a distinctly lobed carapace and thus resembles more closely the Early Devonian species Archaeomartus levis Størmer, 1970. In carapace morphology Archaeomartus approaches the condition seen in the larger and more heavily-armoured taxa Eophrynidae, Kreischeriidae and Aphantomartidae. Thus we provisionally resolve Archaeomartus as sister-group to this probably monophyletic trio of families and discuss the possibility that Trigonotarbidae may be paraphyletic. Ein neuer Trigonotarbiden-Fund (Arachnida: Trigonotarbida: Trigonotarbidae) aus dem Ober-Karbon (Pennsylvanium; Namurium B, höheres Marsdenium) von Hagen-Vorhalle, Deutschland, wird als Archaeomartus roessleri n. sp. beschrieben. Bei der Erst-Dokumentation wurde er noch zu Trigonotarbus johnsoni Pocock, 1911 gestellt; er unterscheidet sich hiervon aber durch die deutlichen Loben auf dem Carapax und ähnelt damit eher dem unterdevonischen Archaeomartus levis Størmer, 1970. In der Carapax-Morphologie nähert sich Archaeomartus mehr den größeren und kräftiger skulptierten Eophrynidae, Kreischeriidae und Aphantomartidae. Daher fassen wir Archaeomartus zumindest vorläufig als Schwestergruppe dieser wahrscheinlich monophyletischen Familien-Dreiergruppe auf; die Trigonotarbidae könnten somit paraphyletisch sein. doi:10.1002/mmng.200600004

Keywords

Paleontology, QE701-760

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
9
Average
Average
Average
gold
Related to Research communities
Italian National Biodiversity Future Center