Hyolitha - Orthothecida - Circothecidae
Synonym: Edgetheca Rozanov et al. 1969
Full reference: A. Y. Rozanov, V. V. Missarzhevsky, N. A. Volkova, L. G. Voronova, I. N. Krylov, B.M. Keller, I. K. Korolyuk, K. Lendzion, R. Mikhnyar, N. G. Pykhova, and A. D. Sidorov. 1969. Tommotskiu jarus i problema nizhney granisty kembriya [The Tommotian Stage and the Cambrian lower Boundary problem]. Trudy Geoligske Institut Leningrad 206:1-379
Parent taxon: Circothecidae according to P. Y. Parkhaev and Y. Demidenko 2010
See also Azmi and Pancholi 1983, Bengtson et al. 1990, Duan 1984, Kouchinsky et al. 2017, Landing 1988, Landing and Bartowski 1996, Malinky and Skovsted 2004, Rozanov et al. 1969 and Sepkoski 2002
Sister taxa: Circotheca, Crossbitheca, Laratheca, Guduguwan, Larawa
Subtaxa: Conotheca australiensis Conotheca brevica Conotheca circumflexa Conotheca corniformis Conotheca curta Conotheca dahaiensis Conotheca mammilata Conotheca ningqiangensis Conotheca rotunda Conotheca shennongjiaensis Conotheca subcurvata
Type: Conotheca mammilata
Ecology: stationary epifaunal suspension feeder
Distribution:
• Placentian of United States (2: Massachusetts collections)
• Cambrian of Antarctica (1), Australia (19), Canada (10: Nova Scotia, Quebec), China (128), Germany (1), Greenland (13), India (4), Kazakhstan (9), Mongolia (1), the Russian Federation (23), Turkey (1), the United Kingdom (1), United States (7: Massachusetts, New York, Pennsylvania)
Total: 220 collections including 290 occurrences
Specimen images are retrieved through the ePANDDA API.
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