Opinions from V. Jaanusson and M. G. Bassett 1993
- 'Glossorthis tacens belongs to Glossorthis' according to Opik 1930
- 'Glossorthis verneuili is recombined as Krattorthis verneuili'
- 'Gonambonites ovata is recombined as Shoshonorthis ovata'
- 'Krattorthis belongs to Orthinae'
- 'Orthambonites belongs to Orthinae'
- 'Orthambonites aequalis belongs to Orthambonites' according to Pander 1830
- 'Orthambonites angulatus belongs to Orthambonites' according to Cooper 1959
- 'Orthambonites angulatus is recombined as Paralenorthis angulatus'
- 'Orthambonites bellus is recombined as Sivorthis bellus'
- 'Orthambonites bielsteini is recombined as Sulevorthis bielsteini'
- 'Orthambonites blountensis is recombined as Sulevorthis blountensis'
- 'Orthambonites cessatus is recombined as Sulevorthis cessatus'
- 'Orthambonites dinorthides is recombined as Shoshonorthis dinorthides'
- 'Orthambonites exopunctatus is recombined as Sulevorthis exopunctatus'
- 'Orthambonites friendsvillensis is recombined as Sivorthis friendsvillensis'
- 'Orthambonites fundata belongs to Orthambonites' according to Rubel 1961
- 'Orthambonites humilidorsatus is recombined as Sulevorthis humilidorsatus'
- 'Orthambonites humilidorsatus albidus is recombined as Sulevorthis humilidorsatus albidus'
- 'Orthambonites humilidorsatus primadventus is recombined as Sulevorthis humilidorsatus primadventus'
- 'Orthambonites humilidorsatus ultimus is recombined as Sulevorthis humilidorsatus ultimus'
- 'Orthambonites lata is a subjective synonym of Orthambonites calligramma' according to Pander 1830
- 'Orthambonites majusculus belongs to Orthambonites' according to Rubel 1961
- 'Orthambonites minus is recombined as Sivorthis minus'
- 'Orthambonites minutus is recombined as Sivorthis minutus'
- 'Orthambonites mollesensis is recombined as Paralenorthis mollesensis'
- 'Orthambonites mostellerensis is recombined as Sulevorthis mostellerensis'
- 'Orthambonites multicostellatus is recombined as Sivorthis multicostellatus'
- 'Orthambonites occidentalis is recombined as Sivorthis occidentalis'
- 'Orthambonites parvicrassicostatus is recombined as Sulevorthis parvicrassicostatus'
- 'Orthambonites perplexus is recombined as Shoshonorthis perplexus'
- 'Orthambonites rectangulatus is recombined as Sulevorthis rectangulatus'
- 'Orthambonites riojanus is recombined as Paralenorthis riojanus'
- 'Orthambonites robustus is recombined as Paralenorthis robustus'
- 'Orthambonites rotunda is a subjective synonym of Orthambonites calligramma'
- 'Orthambonites rotundiformis is recombined as Sulevorthis rotundiformis'
- 'Orthambonites subconvexus is recombined as Shoshonorthis subconvexus'
- 'Orthambonites swanensis is recombined as Shoshonorthis swanensis'
- 'Orthambonites tennesseensis is recombined as Sulevorthis tennesseensis'
- 'Orthambonites tenuicostatus is recombined as Sivorthis tenuicostata'
- 'Orthambonites tifletensis is recombined as Shoshonorthis tifletensis'
- 'Orthidae belongs to Orthacea'
- 'Orthinae belongs to Orthidae'
- 'Orthis belongs to Orthinae'
- 'Orthis alabamensis is recombined as Paralenorthis alabamensis'
- 'Orthis ardmillanensis is recombined as Sivorthis ardmillanensis'
- 'Orthis buttsi is recombined as Paralenorthis buttsi' according to Schuchert and Cooper 1932
- 'Orthis callactis belongs to Orthis' according to Dalman 1828
- 'Orthis callactis belongs to Orthis'
- 'Orthis calligramma is recombined as Orthambonites calligramma'
- 'Orthis calligramma chinensis is a subjective synonym of Paralenorthis serica' according to Chang 1934
- 'Orthis calligramma hupehensis is recombined as Paralenorthis serica' according to Martelli 1901
- 'Paralenorthis serica is a subjective synonym of Paralenorthis serica'
- 'Orthis calligramma proava is recombined as Paralenorthis proava'
- 'Orthis eucharis is recombined as Sivorthis eucharis'
- 'Orthis kreklingensis is recombined as Orthambonites kreklingensis'
- 'Orthis lyckholmiensis belongs to Orthis' according to Wysogorski 1900
- 'Orthis lyckholmiensis is recombined as Sulevorthis lyckholmiensis'
- 'Orthis marshalli is recombined as Paralenorthis marshalli'
- 'Orthis michaelis is recombined as Shoshonorthis michaelis'
- 'Orthis minusculus is recombined as Paralenorthis minusculus'
- 'Orthis novitas is recombined as Orthambonites novitas' according to Opik 1939
- 'Orthis panderania is recombined as Paralenorthis panderania' according to Hall and Clarke 1892
- 'Paralenorthis belongs to Orthinae'
- 'Productus orbicularis is recombined as Paralenorthis orbicularis'
- 'Shoshonorthis belongs to Orthinae'
- 'Sivorthis belongs to Orthinae'
- 'Sivorthis filistera belongs to Sivorthis'
- 'Spirifer alatus is recombined as Paralenorthis alata'