Opinions from M. J. Johns 1997

  • 'Acrodontidae belongs to Hybodontoidea'
  • 'Acrodus belongs to Acrodontidae'
  • 'Carinasubcorona belongs to Elasmobranchii'
  • 'Carinasubcorona subradiciplana belongs to Carinasubcorona'
  • 'Complanicorona belongs to Elasmobranchii'
  • 'Complanicorona glabra belongs to Complanicorona'
  • 'Complanicorona rugosimargines belongs to Complanicorona'
  • 'Complanicorona subrugosa belongs to Complanicorona'
  • 'Coniunctio belongs to Elasmobranchii'
  • 'Coniunctio aequirugosa belongs to Coniunctio'
  • 'Coniunctio multirugosa belongs to Coniunctio'
  • 'Duplisuggestus belongs to Elasmobranchii'
  • 'Duplisuggestus duplirugosus belongs to Duplisuggestus'
  • 'Duplisuggestus profundisulcus belongs to Duplisuggestus'
  • 'Elasmobranchii belongs to Chondrichthyes'
  • 'Fragilicorona belongs to Elasmobranchii'
  • 'Fragilicorona brevirostrum belongs to Fragilicorona'
  • 'Fragilicorona labribrevirostrum belongs to Fragilicorona'
  • 'Fragilicorona labritricuspis belongs to Fragilicorona'
  • 'Fragilicorona tricuspis belongs to Fragilicorona'
  • 'Fragilicorona unicuspis belongs to Fragilicorona'
  • 'Glabrisubcorona belongs to Elasmobranchii'
  • 'Glabrisubcorona tendibasis belongs to Glabrisubcorona'
  • 'Glabrisubcorona vadosidevexa belongs to Glabrisubcorona'
  • 'Gracilisuggestus belongs to Elasmobranchii'
  • 'Gracilisuggestus triapices belongs to Gracilisuggestus'
  • 'Gracilisuggestus uniapex belongs to Gracilisuggestus'
  • 'Hybodontoidea belongs to Euselachii'
  • 'Labascicorona belongs to Elasmobranchii'
  • 'Labascicorona alata belongs to Labascicorona'
  • 'Labascicorona longifossae belongs to Labascicorona'
  • 'Labascicorona mediflexura belongs to Labascicorona'
  • 'Labascicorona nitidifastigia belongs to Labascicorona'
  • 'Labascicorona trifastigia belongs to Labascicorona'
  • 'Labrilancea belongs to Elasmobranchii'
  • 'Labrilancea glabrisubtricuspis belongs to Labrilancea'
  • 'Lobaticorona belongs to Elasmobranchii'
  • 'Lobaticorona floridibasis belongs to Lobaticorona'
  • 'Lobaticorona floriditabella belongs to Lobaticorona'
  • 'Lobaticorona tumidibasis belongs to Lobaticorona'
  • 'Lobaticorona tumiditabella belongs to Lobaticorona'
  • 'Lobaticorona tumiditurris belongs to Lobaticorona'
  • 'Minuticorona belongs to Elasmobranchii'
  • 'Minuticorona triculmina belongs to Minuticorona'
  • 'Minuticorona uniculmen belongs to Minuticorona'
  • 'Ornatilabrilancea belongs to Elasmobranchii'
  • 'Ornatilabrilancea circacarina belongs to Ornatilabrilancea'
  • 'Ornatilabrilancea solicarina belongs to Ornatilabrilancea'
  • 'Palaeospinacidae belongs to Synechodontiformes'
  • 'Parvidiabolus belongs to Elasmobranchii'
  • 'Parvidiabolus acutus belongs to Parvidiabolus'
  • 'Parvidiabolus convexus belongs to Parvidiabolus'
  • 'Parvidiabolus longisulcus belongs to Parvidiabolus'
  • 'Parvidiabolus obliquus belongs to Parvidiabolus'
  • 'Parviscapha belongs to Elasmobranchii'
  • 'Parviscapha trivela belongs to Parviscapha'
  • 'Parviscapha univelum belongs to Parviscapha'
  • 'Polyacrodontidae belongs to Hybodontoidea'
  • 'Polyacrodus belongs to Polyacrodontidae'
  • 'Proprigalea belongs to Elasmobranchii'
  • 'Proprigalea languidula belongs to Proprigalea'
  • 'Proprigalea mediglabra belongs to Proprigalea'
  • 'Proprigalea medirugosa belongs to Proprigalea'
  • 'Rugosicorona belongs to Elasmobranchii'
  • 'Rugosicorona devexa belongs to Rugosicorona'
  • 'Sacrisubcorona belongs to Elasmobranchii'
  • 'Sacrisubcorona submedicarina belongs to Sacrisubcorona'
  • 'Squalomorphii was reranked as a superorder and belongs to Neoselachii'
  • 'Suaviloquentia belongs to Elasmobranchii'
  • 'Suaviloquentia brevilingua belongs to Suaviloquentia'
  • 'Suaviloquentia longilingua belongs to Suaviloquentia'
  • 'Suaviloquentia obliquilingua belongs to Suaviloquentia'
  • 'Synechodontiformes belongs to Squalomorphii'
  • 'Synechodus belongs to Palaeospinacidae'
  • 'Synechodus incrementum belongs to Synechodus'
  • 'Synechodus multinodosus belongs to Synechodus'
  • 'Synechodus volaticus belongs to Synechodus'
  • 'Undulaticorona belongs to Elasmobranchii'
  • 'Undulaticorona profundifossae belongs to Undulaticorona'
  • 'Undulaticorona propensa belongs to Undulaticorona'