Opinions from S. Conway Morris and R. A. Robison 1988
- 'Acinocricus stichus belongs to Acinocricus'
- 'Anomalocaris nathorsti belongs to Anomalocaris' according to C. D. Walcott 1911
- 'Anomalocaris nathorsti belongs to Anomalocaris'
- 'Ecnomocaris belongs to Mollisoniidae'
- 'Ecnomocaris spinosa belongs to Ecnomocaris'
- 'Eldonia belongs to Eldoniidae'
- 'Eldonia ludwigi belongs to Eldonia'
- 'Margaretia belongs to Caulerpaceae'
- 'Margaretia dorus belongs to Margaretia' according to C. D. Walcott 1931
- 'Marpolia belongs to Oscillatoriacea'
- 'Marpolia spissa belongs to Marpolia' according to C. D. Walcott 1919
- 'Naraoia belongs to Naraoiidae'
- 'Naraoia compacta belongs to Naraoia' according to C. D. Walcott 1912
- 'Naraoia compacta belongs to Naraoia'
- 'Orthotheca corrugata belongs to Orthotheca' according to G. F. Matthew 1899
- 'Orthotheca corrugata is recombined as Wiwaxia corrugata'
- 'Orthotheca major belongs to Orthotheca' according to C. D. Walcott 1908
- 'Orthotheca major is recombined as Cambrorhytium major'
- 'Selkirkia belongs to Selkirkiidae'
- 'Selkirkia columbia belongs to Selkirkia'
- 'Selkirkia fragilis is recombined as Cambrorhytium fragilis'
- 'Selkirkia gracilis is an objective synonym of Cambrorhytium major'
- 'Selkirkiidae belongs to Priapulida'
- 'Utahcaris orion belongs to Utahcaris'
- 'Wiwaxia belongs to Wiwaxidae'
- 'Yuknessia belongs to Plantae'
- 'Yuknessia simplex belongs to Yuknessia' according to C. D. Walcott 1919