Trilobita - Corynexochida - Illaenidae
Synonym: Hydrolaenus Salter 1867
Parent taxon: Illaenidae according to F. C. Shaw and T. E. Bolton 2011
See also Amati and Westrop 2004, Jell and Adrain 2002, Raymond 1916 and Sepkoski 2002
Sister taxa: Amphoriops, Bumastoides, Bumastus, Caudillaenus, Cryptonymus, Dysplanus, Eastonillaenus, Ectillaenus, Harpillaenus, Hyboaspis, Illaeninae, Illaenurus, Illaenus, Nanillaenus, Octillaenus, Panderinae, Parillaenus, Platillaenus, Ptilillaenus, Stenopareia, Ulugtella, Zbirovia, Zdicella
Subtaxa: Thaleops arctura Thaleops conifrons Thaleops conradi Thaleops depressicapitata Thaleops jaanussoni Thaleops laurentiana Thaleops longispina Thaleops nunavutica Thaleops ovata Thaleops punctata Thaleops raymondi Thaleops vindex
Ecology: nektobenthic carnivore
Distribution:
• Whiterockian of Canada (11: Quebec collections), United States (7: New York, Vermont)
• Chazyan of Canada (2: Quebec), United States (35: New York, Oklahoma)
• Ordovician of Canada (17: Newfoundland, Northwest Territories, Nunavut, Nunvait, Ontario, Quebec), the Russian Federation (1), United States (34: Illinois, Illinois, Iowa, Iowa/Wisconsin, Minnesota, Missouri, New York, Oklahoma, Virginia)
Total: 107 collections including 115 occurrences
Specimen images are retrieved through the ePANDDA API.
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