Artiopoda - Agnostida - Agnostidae
Full reference: R. A. Robison and J. Pantoja-Alor. 1968. Tremadocian trilobites from the Nochixtlan Region, Oaxaca, Mexico. Journal of Paleontology 42(3):767-800
Parent taxon: Agnostidae according to H. B. Whittington et al. 1997
See also Jell and Adrain 2002, Robison and Pantoja-Alor 1968 and Sepkoski 2002
Sister taxa: Acmarhachis, Agnostinae, Agnostus, Aistagnostus, Barrandagnostus, Biciragnostus, Connagnostus, Eurudagnostus, Formosagnostus, Homagnostus, Idolagnostus, Ivshinagnostus, Kormagnostella, Kormagnostus, Kymagnostus, Lotagnostus, Micragnostus, Neoagnostus, Oncagnostus, Oxyagnostus, Peronopsinae, Ptychagnostinae, Quadrahomagnostus, Semagnostus, Strictagnostus, Trilobagnostus
Subtaxa: Gymnagnostus congros Gymnagnostus kobayashii Gymnagnostus mexicanus Gymnagnostus perinflatus
Type: Gymnagnostus congros
Ecology: slow-moving epifaunal detritivore
Distribution:
• Ordovician of Argentina (5 collections), Bolivia (2), Canada (1: Northwest Territories), Mexico (3)
• Cambrian of Argentina (22), Canada (1: Newfoundland and Labrador)
Total: 34 collections including 38 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.