Alternative spelling: Hyolithelminthes
Parent taxon: Animalia according to R. Wrona 2004
See also Kiessling 2009 and Sepkoski 2002
Sister taxa: Bilateria, Diploblastica, Homoblastica, Namalia, Vertebrosa, Westgardia, Primocandelabrum, Paracharnia, Yunnanomedusa, Lidaconus, Megathrix, Dictyorhabdus, Pseudovendia, Kinzeriidae, Mawsonites, Macrocypris kayi, Lomosovis, Kuckaraukia, Protolyellia, Khasaktidae, Beltanelliformis, Silicea, Petalonamae, Kimberellomorpha, Goettingenia, Rangeomorpha, Atalotaenia, Rhizostomites, Deuteronectanebos, Persimedusites, Subtilicyathus, Kullingia, Spygoria, Chenmengella, Silicispongea, Triradialomorpha, Hadrynichorde, Arboreomorpha, Chondroplon, Evmiaksia, Euradiculata, Pentaradialomorpha, Limacites, Hiemalora, Mesozoa, Siphonoconcha, Yangtziramulus, Armillifera, Parazoa, Proarticulata, Convolutubus, Bronicella, Odontogriphidae, Eumetazoa, Oligoopilionus, Somatohelix, Tetraradialomorpha, Nectocarididae, Epitheliozoa, Palaeacmaea, Nemiana, Muricassis, Scenellopsis, Hadryniscala, Tentaculitoidea, Bomakellia, Parviscopa, Eodiorygma, Ventogyrus, Inaria, Agmata, Funisia, Trichoplax, Xidazoon, Cnidaria, Lazaichnus, Ovatoscutum, Sentularia, Porifera, Bilaterialomorpha, Gephyrea, Problematica, Erniettomorpha, Yelovichnus
Subtaxa: Beklemishevites Byronia Hyolithellidae Ivanovites Koksuja Phosphannulus Thorslundella Torellellidae Torellelloides
Ecology: stationary epifaunal suspension feeder
Distribution:
• Carboniferous of United States (2: Indiana collections)
• Arenig of the Russian Federation (1)
• Ordovician of Argentina (2), Canada (6: British Columbia, Nunavut), Estonia (4), Kazakhstan (1), the Russian Federation (2), Sweden (2)
• Tremadoc of the Russian Federation (1)
• Amgan of Kyrgyzstan (1)
• Delamaran of Canada (2: British Columbia), Jordan (1), United States (5: Pennsylvania, Virginia)
• Waucoban of United States (1: Washington)
• Caerfai of United States (1: New York)
• Placentian of Canada (2: Nova Scotia), United States (8: Massachusetts)
• Cambrian of Antarctica (1), Australia (38), Canada (36: Brithish Columbia, British Columbia, Labrador, New Brunswick, Newfoundland and Labrador, Northwest Territories, Nova Scotia, Quebec), China (67), Estonia (4), France (2), Greenland (41), India (1), Iran (2), Italy (1), Kazakhstan (24), Kyrgyzstan (6), Mexico (5), Mongolia (6), Morocco (3), Norway (2), Poland (1), the Russian Federation (59), South Korea (4), Spain (5), Svalbard and Jan Mayen (1), Sweden (14), Turkey (1), the United Kingdom (9), United States (28: Massachusetts, Nevada, New York, Pennsylvania, Utah, Virginia, Washington)
Total: 403 collections including 618 occurrences