Cephalopoda - Orthocerida - Baltoceratidae
Parent taxon: Orthocerida according to B. Kröger and B. Lefebvre 2012
See also Crick 1981, Evans 2005, Evans 2011, Flower 1964, Hook and Flower 1977, Kröger et al. 2007, Kröger and Evans 2011, Sweet 1958, Teichert et al. 1964 and Unklesbay and Young 1956
Sister taxa: Acrosphaerorthoceras, Aptychopsis, Arionoceratidae, Arterioceras, Badouceras, Bogoslovskya, Brachycycloceratidae, Chicagooceras, Cornuella, Cryptocycloceras, Cycloceras, Dictyoceras, Esopoceras, Folioceras, Garryoceras, Heloceras, Jangziceras, Joldagiroceras, Kentronites, Kionoceratidae, Loxoceras, Mericoceras, Molossus, Murchisoniceras, Naivs, Nebroceras, Neorthoceras, Orthoceratidae, Orthoceratina, Orthodochmiocerataceae, Paradnatoceras, Paramooreoceras, Plicatoceras, Podoliceras, Proteoceratidae, Pseudorthocerataceae, Pseudorthoceratoidea, Pythonoceras, Rhabdites, Rhipsites, Sactorthoceratidae, Sannionites, Sichuanaceras, Sichuanoceratidae, Sphaerorthoceratidae, Sphaerortoceratidae, Subspyroceras, Tartaroceras, Tretoceras, Tripteroceratidae, Trispectes, Uralharuspex, Vericeras, Zhuralevia, Cycloceratidae, Eskimoceratidae, Allumettoceratidae, Michelinoceratidae, Engorthoceratidae, Striatoceratidae, Choanoceratidae
Subtaxa: Annbactroceras Bactroceras Belloceras Castelloceras Cochlioceras Cyrtobaltoceras Endorioceras Eosomichelinoceras Hedstroemoceras Metabaltoceras Microbaltoceras Ogygoceras Rhabdiferoceras Rhabdiferous Semiannuloceras Sinocochleoceras
Ecology: nektonic carnivore
Distribution:
• Chazyan of United States (2: Vermont collections)
• Whiterockian of United States (2: Nevada)
• Hunderum of Sweden (1)
• Whitlandian of the United Kingdom (1)
• Arenig of China (3)
• Arenigian of Svalbard and Jan Mayen (1)
• Dawan of China (6)
• Ordovician of Argentina (5), Australia (4), Bolivia (1), China (21), Czechia (2), Estonia (2), France (11), Germany (1), Indonesia (1), Iran (1), Lithuania (1), Morocco (1), Norway (2), Poland (2), Sweden (7), the United Kingdom (16), United States (13: Arkansas, Nevada, New Mexico, New York, Texas, Vermont)
Total: 107 collections including 114 occurrences