Opinions from J. D. Loch 2007
- 'Asaphidae belongs to Ptychopariida'
- 'Bathyurellus belongs to Bathyurellinae'
- 'Bathyurellus arbucklensis belongs to Bathyurellus'
- 'Bathyurellus marginiatus is recombined as Punka marginiatus'
- 'Bathyuridae belongs to Ptychopariida'
- 'Bathyurinae belongs to Bathyuridae'
- 'Benthamaspis onomeris belongs to Benthamaspis'
- 'Benthamaspis rhochmotis belongs to Benthamaspis'
- 'Bolbocephalus belongs to Bathyurinae'
- 'Bolbocephalus myktos belongs to Bolbocephalus'
- 'Bolbocephalus stevensi is recombined as Strigigenalis stevensi'
- 'Bolbocephalus stitti belongs to Bolbocephalus'
- 'Chapmania belongs to Bathyurellinae'
- 'Chapmania carterensis belongs to Chapmania'
- 'Chapmania taylori belongs to Chapmania'
- 'Cullisonia belongs to Bathyurinae'
- 'Gelasinocephalus belongs to Bathyurinae'
- 'Gelasinocephalus pustulosus belongs to Gelasinocephalus'
- 'Gelasinocephalus whittingtoni belongs to Gelasinocephalus'
- 'Ischyrotoma sila belongs to Ischyrotoma'
- 'Isotelinae belongs to Asaphidae'
- 'Isoteloides belongs to Isotelinae'
- 'Jeffersonia angustimarginata is a subjective synonym of Jeffersonia jenni'
- 'Jeffersonia crassimarginata is recombined as Strigigenalis crassimarginata'
- 'Jeffersonia granosa belongs to Jeffersonia' according to Cullison 1944
- 'Jeffersonia mediacrista is recombined as Benthamaspis mediacrista'
- 'Jeffersonia producta belongs to Jeffersonia' according to Cullison 1944
- 'Jeffersonia producta is recombined as Cullisonia producta'
- 'Jeffersonia ulrichi belongs to Jeffersonia'
- 'Lutesvillia belongs to Bathyurellinae'
- 'Peltabellia knighti is recombined as Strigigenalis knighti'
- 'Petigurus cullisoni belongs to Petigurus'
- 'Ptychopariida belongs to Trilobita'
- 'Punka akoura belongs to Punka'
- 'Punka flabelliformis belongs to Punka'
- 'Punka verecunda belongs to Punka'
- 'Rananasus is corrected as Ranasasus and belongs to Bathyurinae'
- 'Ranasasus colossus belongs to Ranasasus'
- 'Ranasasus conicus belongs to Ranasasus' according to Cullison 1944
- 'Randaynia leatherburyi belongs to Randaynia'
- 'Speyeris belongs to Bathyurinae'
- 'Speyeris hami belongs to Speyeris'
- 'Strigigenalis derbyi belongs to Strigigenalis'
- 'Strigigenalis implexa belongs to Strigigenalis'
- 'Strigigenalis implexa is recombined as Peltabellia implexa' according to Loch 2007
- 'Strigigenalis insentis belongs to Strigigenalis'