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Class Scaphopoda Bronn 1862 (tusk shell)

Parent taxon: Mollusca according to L. W. Ward and B.W. Blackwelder 1987

Sister taxa: Acaenoplax, Acevina, Actinoconus, Aculopileus, Acutirostriconus, Aldanolina, Algomella, Anisomyaria, Aplacophora, Asperoconus, Aviculocephaloconus, Bagenoviella, Beroides, Bisulcus, Bivalvia, Calyptoptomatida, Cambroscutum, Caudofoveata, Centriconus, Cephalopoda, Codonoconus, Conchifera, Conchula, Corystos, Crestoconus, Cyrtostoma, Dingus, Diplacophora, Dysnoetopla, Ebianella, Eosoconus, Gastropoda, Granoconus, Gutticonus, Hamatoconus, Helcionelloida, Hemithecellitina, Huangshandogoconus, Huangshandongoconus, Hubeinella, Hyolitha, Kaschkadakia, Katunioides, Kepinospira, Khairkhaniidae, Khairkhaniiformes, Kraikchania, Kuanchuanella, Ladamarekiidae, Laticonus, Liantuoconus, Ligyrokala, Mackenziella, Macroscenella, Maikhanellidae, Makarakia, Merismoconcha, Minymerisma, Nothamusium, Odontogriphus, Omalenlina, Orthoconus, Palaeacmaea, Paragastropoda, Parascenella, Patelliconidae, Peotoconus, Pichynella, Polytropis, Porcaconus, Proconus, Pseudomatthevia, Rostroconchia, Sargaella, Scamboscamna, Scenellopsis, Serialia, Shabaktiella, Sichuanospira, Sinuconus, Solandangella, Solenogastres, Songlingella, Spatuloconus, Stenothecella, Stenothecoida, Sulcocarina, Tentaculita, Tergomya, Trunctoconus, Tuberoconus, Xilingxiaconus, Xinnanospira, Yangtzemerisma

Subtaxa: Dentaliida, Dentalioida, Dentaloidea, Gadilida, Solenoconchia, Throopella

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Ecology: slow-moving shallow infaunal deposit feeder