Opinions from R. Van Der Laan 2019
- 'Americaspidae belongs to Cyathaspidoidei'
- 'Americaspis belongs to Americaspidae'
- 'Amphiaspididae belongs to Amphiaspidoidei'
- 'Amphiaspis belongs to Amphiaspididae'
- 'Angaraspididae belongs to Amphiaspidoidei'
- 'Angaraspis belongs to Angaraspididae'
- 'Anglaspidae belongs to Cyathaspidoidei'
- 'Anglaspis belongs to Anglaspidae'
- 'Aphataspididae belongs to Hibernaspidoidei'
- 'Arandaspida belongs to Pteraspidomorpha'
- 'Arandaspididae belongs to Arandaspidiformes'
- 'Arandaspidiformes belongs to Arandaspida'
- 'Arandaspis belongs to Arandaspididae'
- 'Ariaspididae belongs to Heterostraci'
- 'Ariaspis belongs to Ariaspididae'
- 'Aseraspididae belongs to Arandaspida'
- 'Aseraspis belongs to Aseraspididae'
- 'Astrapidiformes is corrected as Astraspidiformes and belongs to Astraspida'
- 'Astraspida was reranked as a subclass and belongs to Pteraspidomorpha'
- 'Astraspididae belongs to Astraspidiformes'
- 'Astraspis belongs to Astraspididae'
- 'Boothiaspidinae belongs to Torpedaspididae'
- 'Boothiaspis belongs to Boothiaspidinae'
- 'Cardipeltidae belongs to Cardipeltiformes'
- 'Cardipeltiformes belongs to Heterostraci'
- 'Cardipeltis belongs to Cardipeltiformes'
- 'Cephalaspidomorphi is a subjective synonym of Petromyzontida'
- 'Corvaspididae belongs to Corvaspidiformes'
- 'Corvaspidiformes belongs to Heterostraci'
- 'Corvaspis belongs to Corvaspididae'
- 'Craniata belongs to Chordata'
- 'Ctenaspidae belongs to Cyathaspidoidei'
- 'Ctenaspis belongs to Ctenaspidae'
- 'Cyathaspidae belongs to Cyathaspidoidei'
- 'Cyathaspidiformes was reranked as a order and belongs to Heterostraci'
- 'Cyathaspidoidei belongs to Cyathaspidiformes'
- 'Cyathaspis belongs to Cyathaspidae'
- 'Dictyaspidella belongs to Dictyaspidellidae'
- 'Dictyaspidellidae belongs to Cyathaspidoidei'
- 'Dictyaspis belongs to Dictyonaspidae'
- 'Dictyonaspidae belongs to Cyathaspidoidei'
- 'Dinaspidae belongs to Cyathaspidoidei'
- 'Dinaspidella belongs to Dinaspidellidae'
- 'Dinaspidellidae belongs to Cyathaspidoidei'
- 'Dinaspis belongs to Dinaspidae'
- 'Diplaspidae belongs to Cyathaspidoidei'
- 'Diplaspis belongs to Diplaspidae'
- 'Edaphaspididae belongs to Amphiaspidoidei'
- 'Edaphaspis belongs to Edaphaspididae'
- 'Eglonaspididae belongs to Hibernaspidoidei'
- 'Eglonaspis belongs to Eglonaspididae'
- 'Eriptychiidae belongs to Astraspidiformes'
- 'Eriptychius belongs to Eriptychiidae'
- 'Gabreyaspididae belongs to Amphiaspidoidei'
- 'Gabreyaspis belongs to Gabreyaspididae'
- 'Geotriidae belongs to Petromyzontiformes'
- 'Gilpichthyidae belongs to Petromyzontida'
- 'Gilpichthys belongs to Gilpichthyidae'
- 'Hardistiella belongs to Hardistiellidae'
- 'Hardistiellidae belongs to Petromyzontiformes'
- 'Heterostraci belongs to Pteraspidomorpha'
- 'Hibernaspididae belongs to Hibernaspidoidei'
- 'Hibernaspidoidei belongs to Cyathaspidiformes'
- 'Hibernaspis belongs to Hibernaspididae'
- 'Irregularaspidae belongs to Cyathaspidoidei'
- 'Lepidaspididae belongs to Lepidaspidiformes'
- 'Lepidaspidiformes belongs to Heterostraci'
- 'Lepidaspis belongs to Lepidaspididae'
- 'Mayomyzon belongs to Mayomyzontidae'
- 'Mayomyzontidae belongs to Petromyzontiformes'
- 'Mordaciidae belongs to Petromyzontiformes'
- 'Myllokunmingia belongs to Myllokunmingiidae'
- 'Myllokunmingiidae belongs to Myllokunmingiiformes'
- 'Myllokunmingiiformes belongs to Craniata'
- 'Myxini was reranked as a class and belongs to Myxinomorphi'
- 'Myxinidae belongs to Myxiniformes'
- 'Myxiniformes belongs to Myxini'
- 'Myxinomorphi was reranked as a unranked clade and belongs to Craniata'
- 'Natlaspididae belongs to Tesseraspidiformes'
- 'Natlaspis belongs to Natlaspididae'
- 'Olbiaspididae belongs to Amphiaspidoidei'
- 'Olbiaspis belongs to Olbiaspididae'
- 'Oniscolepididae belongs to Astraspidiformes'
- 'Oniscolepis belongs to Oniscolepididae'
- 'Palaeaspidae belongs to Cyathaspidoidei'
- 'Palaeaspis belongs to Palaeaspidae'
- 'Petromyzontida belongs to Vertebrata'
- 'Petromyzontidae belongs to Petromyzontiformes'
- 'Petromyzontiformes belongs to Petromyzontida'
- 'Phialaspididae belongs to Traquairaspidiformes'
- 'Pipisciidae belongs to Petromyzontida'
- 'Pipiscius belongs to Pipisciidae'
- 'Poraspidae belongs to Cyathaspidoidei'
- 'Poraspis belongs to Poraspidae'
- 'Porophoraspidae belongs to Arandaspidiformes'
- 'Porophoraspis belongs to Porophoraspidae'
- 'Pteraspidomorpha belongs to Pteraspidomorphi'
- 'Pteraspidomorphi was reranked as a superclass and belongs to Craniata'
- 'Siberiaspididae belongs to Siberiaspidoidei'
- 'Siberiaspidoidei belongs to Cyathaspidiformes'
- 'Siberiaspis belongs to Siberiaspididae'
- 'Tesakoviaspididae belongs to Astraspidiformes'
- 'Tesakoviaspis belongs to Tesakoviaspididae'
- 'Tesseraspididae belongs to Tesseraspidiformes'
- 'Tesseraspidiformes belongs to Heterostraci'
- 'Tesseraspis belongs to Tesseraspididae'
- 'Tolypaspidae belongs to Tolypelepidiformes'
- 'Tolypaspis belongs to Tolypaspidae'
- 'Tolypelepididae belongs to Tolypelepidiformes'
- 'Tolypelepidiformes belongs to Heterostraci'
- 'Tolypelepis belongs to Tolypelepididae'
- 'Torpedaspididae belongs to Cyathaspidoidei'
- 'Torpedaspis belongs to Torpedaspididae'
- 'Traquairaspidae belongs to Traquairaspidiformes'
- 'Traquairaspidiformes belongs to Heterostraci'
- 'Tuxeraspididae belongs to Siberiaspidoidei'
- 'Tuxeraspis belongs to Tuxeraspididae'
- 'Vertebrata was reranked as a unranked clade and belongs to Craniata'
- 'Weigeltaspidae belongs to Traquairaspidiformes'
- 'Weigeltaspis belongs to Weigeltaspidae'