Arthrorhachis Hawle and Corda 1847 (trilobite)

Trilobita - Agnostida - Metagnostidae

Synonym: Girvanagnostus Kobayashi 1939

Parent taxon: Metagnostidae according to O. A. Hoel 1999

See also Ahlberg 1989, Jell and Adrain 2002, Owen 1981, Sepkoski 2002 and Whittington et al. 1997

Sister taxa: Anglagnostus, Corrugatagnostus, Dividuagnostus, Galbagnostus, Geragnostella, Geragnostus, Homagnostoides, Quadragnostus, Trinodus

Subtaxa: Arthrorhachis danica Arthrorhachis elliptifrons Arthrorhachis tarda Arthrorhachis tardus

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Type: Battus tardus

Ecology: slow-moving epifaunal detritivore

Distribution:

• Ordovician of Belgium (2 collections), Canada (1: Yukon), China (6), the Czech Republic (2), Denmark (3), Ireland (1), Italy (2), Kazakhstan (1), Norway (8), Poland (1), Sweden (22), the United Kingdom (8), United States (6: California, Virginia)

• Llandeilo of Canada (1: Yukon)

• Arenig of the United Kingdom (2)

Total: 66 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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