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†order Ellesmerocerida Flower and Kummel, Jr. 1950 (mollusk)

Cephalopoda

Alternative spelling: Ellesmeroceratida

Full reference: R. H. Flower and B. Kummel, Jr. 1950. A Classification of the Nautiloidea. Journal of Paleontology 24(5):604-616

Parent taxon: Cephalopoda according to B. Kröger and B. Lefebvre 2012

Sister taxa: Actinoceratoidea, Actinocerida, Actinodochmioceras, Akidocheilus, Ammonoidea, Ascocerida, Aulacocerida, Ausseites, Avramidiscus, Bactritoidea, Barrandeocerida, Belemnitida, Belosaepia, Boletzkida, Botellusoceras, Burronoceras, Coleoidea, Conchorhynchus, Cyrtoceras, Dartoceras, Davidiceras, Deltoceratidae, Desmoceras, Discosorida, Dissimilites, Endoceratoidea, Endocerida, Endocycloceratidae, Erlangericheilus, Gonatocheilus, Hadrocheilus, Heyuncunoceras, Kailiceras, Kotetishvilia, Lamellaptychus, Leptocheilus, Mesoteuthoidea, Nautilida, Nautiloidea, Oncocerida, Orthoceratoidea, Orthoceratoidea, Orthocerida, Orthodochmioceras, Palaeoteuthis, Patruliusiceras, Plectonocerida, Protactinocerida, Pseudorthocerida, Rhynchoteuthis, Rhyncolites, Robsonoceratidae, Scaptorrhynchus, Sichunoceras, Songkanoceras, Spirulirostridae, Stemtonoceratidae, Tarphycerida, Teratoceroides, Tetrabranchiata, Tillicheilus, Toxancyloceras, Werthenoceras, Yanhecerida, Yannanoceras, Yichangoceras, Paratrematoceras, Balticoceras, Arkonoceras, Eotripteroceras, Hesperoceras, Sinoceras, Imbricatoceras

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

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Ecology: nektobenthic carnivore