Hyolitha - Orthothecida - Circothecidae
Synonym: Edgetheca aldanica 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
Belongs to Conotheca according to A. Kouchinsky et al. 2017
See also Landing 1988, Landing and Bartowski 1996, Parkhaev and Demidenko 2010 and Rozanov et al. 1969
Sister taxa: Conotheca australiensis, Conotheca brevica, Conotheca circumflexa, Conotheca corniformis, Conotheca curta, Conotheca dahaiensis, Conotheca ningqiangensis, Conotheca rotunda, Conotheca shennongjiaensis, Conotheca subcurvata
Type specimens:
- Conotheca mammilata: GIN 3593/21, a shell
- Edgetheca aldanica: GIN 3481/1187, a shell.
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cambrian of China (4 collections), Kazakhstan (8), the Russian Federation (18), United States (1: Massachusetts)
• Placentian of United States (2: Massachusetts)
Total: 33 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.