Full reference: L. Marek. 1966. New hyolithid genera from the Ordovician of Bohemia. Casopis Narodního Musea, oddíl prírodovedny 135:89-92
Parent taxon: Hyolitha according to A. Kouchinsky et al. 2017
See also Azmi and Pancholi 1983, Malinky and Racheboeuf 2011 and Sepkoski 2002
Sister taxa: Attenuella, Hyolithida, Hyolithomorpha, Orthothecimorpha
Subtaxa: Aldanothecidae Allathecidae Ancheilotheca Bolitheca Brevitheca Bucanotheca Carinitheca Chelsonella Circothecidae Cupitheca Curtitheca Ebianotheca Eogloborilus Eonovitatus Girvanolithes Gracilithecidae Grandicornus Hexitheca Inflaticornus Isititheca Khetatheca Kotuyitheca Lophotheca Minitheca Mooritheca Neobactrotheca Nikatheca Novitatidae Orthothecidae Panitheca Paragloborilus Petasotheca Plicitheca Probactrotheca Renitheca Sysoievia Tchuranitheca Tetratheca Tetrathecidae Triplicatellidae Turcutheca
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cretaceous of Antarctica (5 collections)
• Devonian of Australia (1), the Czech Republic (2), Germany (1), Morocco (9), South Africa (5), United States (1: Pennsylvania)
• Silurian of Australia (1), the Czech Republic (1)
• Dobrotivian of the Czech Republic (1)
• Arenig of Argentina (1)
• Ordovician of China (2), the Czech Republic (3), Morocco (3), Poland (1), Sweden (2), the United Kingdom (10)
• Tremadoc of Argentina (1), France (2), Spain (1), Sweden (1)
• Cressagian of the United Kingdom (1)
• Amgan of Norway (1), the Russian Federation (2)
• Solvan of Morocco (1), the Russian Federation (1), Sweden (3)
• Ordian of Australia (2)
• Delamaran of United States (2: Idaho)
• Caerfai of Canada (1: Nunavut)
• Placentian of Canada (1: Nova Scotia), United States (4: Massachusetts)
• Cambrian of Antarctica (2), Australia (78), Canada (21: New Brunswick, Newfoundland and Labrador, Nova Scotia, Quebec), China (175), Germany (8), Greenland (29), India (5), Iran (3), Kazakhstan (10), Kyrgyzstan (1), Mexico (4), Mongolia (2), Morocco (1), the Russian Federation (80), Spain (1), Sweden (2), Turkey (1), the United Kingdom (7), United States (14: Massachusetts, Montana, New York, Pennsylvania, Texas, Vermont)
Total: 517 collections including 1020 occurrences