Cephalopoda - Ellesmerocerida - Eothinoceratidae
Parent taxon: Ellesmerocerida according to B. Kröger and D. H. Evans 2011
See also Evans 2005
Sister taxa: Acaroceratidae, Antacaroceras, Balkoceratidae, Bambusoceras, Bathmoceratidae, Cyptendocerina, Cyrtocerinina, Ellesmeroceratidae, Ellesmeroceratina, Eocyckistomiceras, Huaiheceratidae, Hunyuenoceras, Parapalaeoceras, Phthanoncoceratidae, Plectronoceratidae, Plectronoceratina, Protocycloceratidae, Qiushougouceras, Rudolfoceratidae, Shideleroceratidae, Theskeloceras, Vassaroceras, Xiaoshaoceras
Subtaxa: Conothinoceras Desioceras Margaritoceras Protothinoceras Sacerdosoceras Saloceras
Type: Eothinoceras
Ecology: nektobenthic carnivore
Distribution:
• Arenig of Bolivia (1 collection)
• Ordovician of France (7), the United Kingdom (14)
Total: 22 collections including 25 occurrences