Opinions from S. Stumpf and J. Kriwet 2019
- 'Agaleidae [misspelled as Agalidae] belongs to Neoselachii'
- 'Agaleus belongs to Agalidae'
- 'Agaleus dorsetensis belongs to Agaleus'
- 'Antiquaobatis belongs to Rajiformes'
- 'Antiquaobatis grimmenensis belongs to Antiquaobatis'
- 'Batomorphii belongs to Neoselachii'
- 'Crassodontidanidae belongs to Hexanchoidei'
- 'Galeomorphii belongs to Neoselachii'
- 'Hexanchiformes belongs to Squalomorphii'
- 'Hexanchoidea was reranked as the suborder Hexanchoidei and belongs to Hexanchiformes'
- 'Hybodontes is corrected as Hybodontidae and belongs to Hybodontoidea'
- 'Hybodontinae belongs to Hybodontidae'
- 'Hybodontoidea belongs to Hybodontiformes'
- 'Hybodus belongs to Hybodontinae'
- 'Hybodus hauffianus belongs to Hybodus'
- 'Hybodus reticulatus belongs to Hybodus'
- 'Lissodus belongs to Hybodontoidea'
- 'Lonchidiidae belongs to Hybodontoidea'
- 'Notidanoides belongs to Crassodontidanidae'
- 'Orectolobiformes belongs to Galeomorphii'
- 'Orthacodontidae belongs to Synechodontiformes'
- 'Palaeospinacidae belongs to Synechodontiformes'
- 'Palidiplospinax belongs to Palaeospinacidae'
- 'Paraorthacodontidae belongs to Synechodontiformes'
- 'Paraorthacodus belongs to Paraorthacodontidae'
- 'Rajiformes belongs to Batomorphii'
- 'Sphenodus belongs to Orthacodontidae'
- 'Squalomorphii belongs to Neoselachii'
- 'Synechodontiformes belongs to Neoselachii'
- 'Synechodus enniskilleni is recombined as Palidiplospinax enniskilleni'
- 'Synechodus occultidens is recombined as Palidiplospinax occultidens'