PBDB

Opinions from J. G. M. Thewissen 1990

'Ectocion cedrus belongs to Ectocion'
'Ectocion collinus belongs to Ectocion'
'Ectocion mediotuber belongs to Ectocion'
'Ectocion parvus belongs to Ectocion'
'Ectocion ralstonensis is a subjective synonym of Ectocion osbornianus'
'Ectocion superstes belongs to Ectocion'
'Eohyus is a subjective synonym of Phenacodus'
'Eohyus distans is a nomen vanum'
'Gidleyina is a subjective synonym of Ectocion'
'Gidleyina montanensis is a subjective synonym of Ectocion collinus'
'Gidleyina silberlingi is a subjective synonym of Ectocion collinus'
'Gidleyina wyomingensis is recombined as Ectocion wyomingensis' according to West 1976
'Gidleyina wyomingensis is a subjective synonym of Ectocion collinus'
'Hyracotherium vortmani is recombined as Phenacodus vortmani'
'Meniscotherium priscum belongs to Meniscotherium'
'Meniscotherium semicingulatum is a subjective synonym of Ectocion collinus'
'Mioclaenus floverianus is a subjective synonym of Tetraclaenodon puercensis'
'Oligotomus osbornianus is recombined as Ectocion osbornianus'
'Opisthotomus is a subjective synonym of Phenacodus'
'Opisthotomus astutus is a nomen dubium'
'Phenacodus almiensis is a subjective synonym of Phenacodus vortmani'
'Phenacodus almiensis is a subjective synonym of Phenacodus vortmani' according to West 1976
'Phenacodus almiensis belongs to Phenacodus' according to Gazin 1942
'Phenacodus apternus is a subjective synonym of Phenacodus vortmani'
'Phenacodus brachypternus is recombined as Copecion brachypternus'
'Phenacodus calceolatus is a subjective synonym of Tetraclaenodon puercensis'
'Phenacodus copei is a subjective synonym of Phenacodus vortmani' according to Bown 1979
'Phenacodus copei is a subjective synonym of Phenacodus vortmani' according to West 1976
'Phenacodus copei is a subjective synonym of Phenacodus vortmani'
'Phenacodus gidleyi is a subjective synonym of Phenacodus matthewi'
'Phenacodus grangeri belongs to Phenacodus'
'Phenacodus hemiconus is a nomen dubium'
'Phenacodus hemiconus is a subjective synonym of Phenacodus intermedius' according to Bown 1979
'Phenacodus hemiconus is a subjective synonym of Phenacodus primaeous' according to West 1976
'Phenacodus hemiconus is a subjective synonym of Phenacodus primaeous' according to Dorr 1958
'Phenacodus macropternus is recombined as Bunophorus macropternus'
'Phenacodus magnus belongs to Phenacodus'
'Phenacodus matthewi belongs to Phenacodus'
'Phenacodus matthewi is a subjective synonym of Phenacodus vortmani' according to Bown 1979
'Phenacodus nuniensis is a nomen dubium'
'Phenacodus omnivorus is a nomen dubium'
'Phenacodus primaevus is a nomen dubium'
'Phenacodus puercensis is recombined as Tetraclaenodon puercensis'
'Phenacodus robustus is a subjective synonym of Phenacodus trilobatus'
'Phenacodus robustus is a subjective synonym of Phenacodus primaeous' according to West 1976
'Phenacodus sulcatus is a nomen dubium'
'Phenacodus trilobatus belongs to Phenacodus'
'Prosthecion is a subjective synonym of Ectocion'
'Prosthecion major is recombined as Ectocion major'
'Protogonia is a subjective synonym of Tetraclaenodon'
'Protogonia plicifera is a subjective synonym of Tetraclaenodon puercensis'
'Protogonia subquadrata is a subjective synonym of Tetraclaenodon puercensis'
'Tetraclaenodon belongs to Phenacodontidae'
'Tetraclaenodon septentrionalis belongs to Tetraclaenodon'
'Tetraclaenodon superior is a subjective synonym of Ectocion collinus'
'Tetraclaenodon superior is a subjective synonym of Ectocion collinus' according to Gazin 1956
'Tetraclaenodon symbolicus is a subjective synonym of Tetraclaenodon puercensis'
'Tetraclaenodon transitus is a subjective synonym of Phenacodus grangeri'
'Tetraclaenodon transitus belongs to Tetraclaenodon' according to Dorr 1958