Artiopoda - Agnostida - Metagnostidae
Parent taxon: Metagnostidae according to H. B. Whittington et al. 1997
See also Harrington and Leanza 1957, Jell and Adrain 2002, Owen and Bruton 1980, Owens and Fortey 2009 and Sepkoski 2002
Sister taxa: Anglagnostus, Arthrorhachis, Chatkalagnostus, Corrugatagnostus, Dividuagnostus, Galbagnostus, Geragnostella, Geragnostus, Granuloagnostus, Homagnostoides
Subtaxa: Trinodus agnostiformis Trinodus clusus Trinodus cylindricus Trinodus elspethi Trinodus jujuyensis Trinodus saltaensis Trinodus tardus
Type: Trinodus agnostiformis
Ecology: slow-moving epifaunal detritivore
Distribution:
• Uhaku of Sweden (1 collection)
• Whiterockian of Canada (1: Newfoundland and Labrador), United States (2: Nevada)
• Arenig of China (5), France (2), Sweden (1)
• Arenigian of Argentina (1), China (2), France (1)
• Dawan of China (1)
• Ordovician of Argentina (5), Australia (1), Canada (1: Northwest Territories), China (24), Czechia (3), France (1), Iran (1), Ireland (5), Norway (5), the Russian Federation (5), Spain (1), Sweden (29), the United Kingdom (4), United States (17: California, Maine, Nevada, Oklahoma, Utah, Virginia)
Total: 119 collections including 123 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.