†family Rioceratidae Kröger and Evans 2011 (mollusk)

Cephalopoda - Ellesmerocerida - Rioceratidae

Full reference: B. Kröger and D. H. Evans. 2011. Review and paleoecological analysis of the late Tremadocian – early Floian (Early Ordovician) cephalopod fauna of the Montagne Noire, France. Fossil Record 14(1):5-34

Parent taxon: Ellesmerocerida according to B. Kröger and D. H. Evans 2011

Sister taxa: Acaroceratidae, Anhuiceras, Antacaroceras, Bambusoceras, Bassleroceratidae, Bathmoceratidae, Belloceras, Chabactoceras, Cyclostomiceratidae, Cyptendocerina, Cyrtocerinina, Dongshanoceras, Eburoceras, Ellesmeroceratidae, Ellesmeroceratina, Eoclarkoceras, Eocyckistomiceras, Eodiaphragmoceras, Eoectenolites, Eothinoceratidae, Huaiheceras, Huiaihecerina, Hunyuenoceras, Irianoceras, Jiagouceras, Keraiaceras, Lunanoceras, Meikeloceras, Paradakeoceras, Parapalaeoceras, Paraplectronoceras, Phthanoncoceratidae, Plectronoceratina, Pseudendoceras, Purmanarcoceras, Qiushougouceras, Rectseptoceras, Rhabdiferous, Rudolfoceratidae, Shideleroceratidae, Sinolebetoceras, Tanycameroceras, Theskeloceras, Vassaroceras, Weishanhuceras, Xiaoshaoceras, Zhuibianoceras

Subtaxa: Felinoceras Rioceras

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Ecology: nektobenthic carnivore

Distribution:

• Ordovician of France (5 collections), Mexico (1), Morocco (1), United States (3: New Mexico)

• Cassinian of United States (3: Minnesota, Nevada, Texas)

• Canadian of United States (1: Maryland)

Total: 14 collections including 21 occurrences

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