MolluscaBase taxon details
Troedssonellidae Kobayashi, 1935 †
1727229 (urn:lsid:marinespecies.org:taxname:1727229)
accepted
Family
Endocycloceratidae Ulrich, Foerste, A. K. Miller & Unklesbay, 1944 † · unaccepted > junior subjective synonym
Protocycloceratidae Kobayashi, 1935 † · unaccepted > junior subjective synonym
- Genus Buttsoceras Ulrich & Foerste, 1933 †
- Genus Endocycloceras Ulrich, Foerste, A. K. Miller & Unklesbay, 1944 †
- Genus Kyminoceras Teichert & Glenister, 1954 †
- Genus Moridunoceras D. H. Evans, 2005 †
- Genus Protocycloceras Hyatt, 1900 †
- Genus Tajaroceras S. C. Hook & Flower, 1976 †
- Genus Thoraloceras Kröger & D. H. Evans, 2011 †
- Genus Troedssonella Kobayashi, 1935 †
- Genus Oxfordoceras Ulrich, Foerste, A. K. Miller & Unklesbay, 1944 † (uncertain > unassessed)
- Genus Palaeocycloceras Shimizu & Obata, 1936 † accepted as Protocycloceras Hyatt, 1900 † (unaccepted > junior subjective synonym)
- Genus Rhabdocycloceras Zhuravleva, 1994 † accepted as Protocycloceras Hyatt, 1900 † (unaccepted > junior subjective synonym)
marine, brackish, fresh, terrestrial
fossil only
Kobayashi, T. (1935). Restudy on Manchuroceras with a Brief Note on the Classification of Endoceroids.,. <em>The Journal of the Geological Society of Japan.</em> 42(506): 736-752., available online at https://doi.org/10.5575/geosoc.42.736
page(s): 751 [details] Available for editors
[request]
page(s): 751 [details] Available for editors
[request]
MolluscaBase eds. (2025). MolluscaBase. Troedssonellidae Kobayashi, 1935 †. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1727229 on 2026-05-06
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
original description
Kobayashi, T. (1935). Restudy on Manchuroceras with a Brief Note on the Classification of Endoceroids.,. <em>The Journal of the Geological Society of Japan.</em> 42(506): 736-752., available online at https://doi.org/10.5575/geosoc.42.736
page(s): 751 [details] Available for editors [request]
original description (of Protocycloceratidae Kobayashi, 1935 †) Kobayashi, T. (1935). Suggestions for the natural classification and benthonic adaptation of early uncoiled nautiloids. <em>Proceedings of the Imperial Academy.</em> 12: 296–298., available online at https://doi.org/10.2183/pjab1912.11.435 [details]
original description (of Endocycloceratidae Ulrich, Foerste, A. K. Miller & Unklesbay, 1944 †) Ulrich, E. O.; Foerste, A. F.; Miller, A. K.; Unklesbay, A. G. (1944). Ozarkian and Canadian Cephalopods: Part III: Longicones and Summary. <em>Geological Society of America Special Papers.</em> 59: 1-226., available online at https://doi.org/10.1130/spe58
page(s): 30 [details] Available for editors [request]
basis of record Evans, D. H. (2005). The Lower and Middle Ordovician cephalopod faunas of England and Wales. <em>Monographs of the Palaeontographical Society.</em> 158(623): 1-77., available online at https://doi.org/10.1080/25761900.2022.12131803 [details] Available for editors [request]
page(s): 751 [details] Available for editors
[request]original description (of Protocycloceratidae Kobayashi, 1935 †) Kobayashi, T. (1935). Suggestions for the natural classification and benthonic adaptation of early uncoiled nautiloids. <em>Proceedings of the Imperial Academy.</em> 12: 296–298., available online at https://doi.org/10.2183/pjab1912.11.435 [details]
original description (of Endocycloceratidae Ulrich, Foerste, A. K. Miller & Unklesbay, 1944 †) Ulrich, E. O.; Foerste, A. F.; Miller, A. K.; Unklesbay, A. G. (1944). Ozarkian and Canadian Cephalopods: Part III: Longicones and Summary. <em>Geological Society of America Special Papers.</em> 59: 1-226., available online at https://doi.org/10.1130/spe58
page(s): 30 [details] Available for editors
[request]basis of record Evans, D. H. (2005). The Lower and Middle Ordovician cephalopod faunas of England and Wales. <em>Monographs of the Palaeontographical Society.</em> 158(623): 1-77., available online at https://doi.org/10.1080/25761900.2022.12131803 [details] Available for editors
[request]
