| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/phoebodus.jpg) Phoebodontiformes †Phoebodus |
| Phoebodontiformes †Diademodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/thrinacodus.jpg) Phoebodontiformes †Thrinacodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/squatinactis.jpg) Squatinactiformes †Squatinactis |
| Protacrodontiformes †Protacrodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/barbclabornia.jpg) Xenacanthida | Bransonelliformes †Barbclabornia |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/bransonella.jpg) Xenacanthida | Bransonelliformes †Bransonella |
| Xenacanthida | Xenacanthiformes †Anodontacanthus |
| Xenacanthida | Xenacanthiformes †Tikiodontus |
| Xenacanthida | Xenacanthiformes | Diploselachidae †Diplodoselache |
| Xenacanthida | Xenacanthiformes | Diploselachidae †Dicentrodus |
| Xenacanthida | Xenacanthiformes | Diploselachidae †Hagenoselache |
| Xenacanthida | Xenacanthiformes | Diploselachidae †Hokomata |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/lebachacanthus.jpg) Xenacanthida | Xenacanthiformes | Diploselachidae †Lebachacanthus |
| Xenacanthida | Xenacanthiformes | Diploselachidae †Reginaselache |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/sphenacanthus.jpg) Xenacanthida | Xenacanthiformes | Sphenacanthidae †Sphenacanthus |
| Xenacanthida | Xenacanthiformes | Sphenacanthidae †Xenosynechodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/orthacanthus.jpg) Xenacanthida | Xenacanthiformes | Orthacanthidae †Orthacanthus |
| Xenacanthida | Xenacanthiformes | Xenacanthidae †Mooreodontus |
| Xenacanthida | Xenacanthiformes | Xenacanthidae †Plicatodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/triodus.jpg) Xenacanthida | Xenacanthiformes | Xenacanthidae †Triodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/xenacanthus.jpg) Xenacanthida | Xenacanthiformes | Xenacanthidae †Xenacanthus |
| Xenacanthida | Xenacanthiformes | Xenacanthidae †Wurdigneria |
| Ctenacanthiformes †Acandylacanthus |
| Ctenacanthiformes †Arauzia |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/goodrichthys.jpg) Ctenacanthiformes †Goodrichthys |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/kaibabvenator.jpg) Ctenacanthiformes †Kaibabvenator |
| Ctenacanthiformes †Moyacanthus |
| Ctenacanthiformes †Nanoskalme |
| Ctenacanthiformes †Neosaivodus |
| Ctenacanthiformes †Pororhiza |
| Ctenacanthiformes †Saivodus |
| Ctenacanthiformes | Heslerodidae †Heslerodus |
| Ctenacanthiformes | Ctenacanthoidea †Anaclitacanthus |
| Ctenacanthiformes | Ctenacanthoidea †Asteroptychius |
| Ctenacanthiformes | Ctenacanthoidea †Carinacanthus |
| Ctenacanthiformes | Ctenacanthoidea †Pyknotylacanthus |
| Ctenacanthiformes | Ctenacanthoidea †Rhombacanthus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/wodnika.jpg) Ctenacanthiformes | Ctenacanthoidea †Wodnika |
| Ctenacanthiformes | Ctenacanthoidea | Ctenacanthidae †Acondylacanthus |
| Ctenacanthiformes | Ctenacanthoidea | Ctenacanthidae †Amelacanthus |
| Ctenacanthiformes | Ctenacanthoidea | Ctenacanthidae †Bythiacanthus |
| Ctenacanthiformes | Ctenacanthoidea | Ctenacanthidae †Cratoselache |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/ctenacanthus.jpg) Ctenacanthiformes | Ctenacanthoidea | Ctenacanthidae †Ctenacanthus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/dracopristis.jpg) Ctenacanthiformes | Ctenacanthoidea | Ctenacanthidae †Dracopristis |
| Ctenacanthiformes | Ctenacanthoidea | Ctenacanthidae †Eunemacanthus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/glikmanius.jpg) Ctenacanthiformes | Ctenacanthoidea | Ctenacanthidae †Glikmanius |
| Ctenacanthiformes | Ctenacanthoidea | Ctenacanthidae †Glymmatacanthus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/bandringa.jpg) Ctenacanthiformes | Ctenacanthoidea | Bandringidae †Bandringa |
| Ctenacanthiformes | Ctenacanthoidea | Tamiobatidae †Tamiobatis |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/acrodus.jpg) Euselachii | Hybodontiformes | Acrodontidae †Acrodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/strophodus.jpg) Euselachii | Hybodontiformes | Acrodontidae †Strophodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/asteracanthus.jpg) Euselachii | Hybodontiformes | Hybodontidae †Asteracanthus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/diablodontus.jpg) Euselachii | Hybodontiformes | Hybodontidae †Diablodontus |
| Euselachii | Hybodontiformes | Hybodontidae †Dicrenodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/egertonodus.jpg) Euselachii | Hybodontiformes | Hybodontidae †Egertonodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/hybodus.jpg) Euselachii | Hybodontiformes | Hybodontidae †Hybodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/meristodonoides.jpg) Euselachii | Hybodontiformes | Hybodontidae †Meristodonoides |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/planohybodus.jpg) Euselachii | Hybodontiformes | Hybodontidae †Planohybodus |
| Euselachii | Hybodontiformes | Hybodontidae †Priohybodus |
| Euselachii | Hybodontiformes | Hybodontidae †Sphenonchus |
| Euselachii | Hybodontiformes | Hybodontidae †Tribodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/lonchidion.jpg) Euselachii | Hybodontiformes | Lonchidiidae †Lonchidion |
| Euselachii | Hybodontiformes | Polyacrodontidae †Polyacrodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/ptychodus.jpg) Euselachii | Neoselachii | Ptychodontidae †Ptychodus |
| Euselachii | Neoselachii | Synechodontiformes †Rhomphaiodon |
| Euselachii | Neoselachii | Synechodontiformes †Mucrovenator |
| Euselachii | Neoselachii | Synechodontiformes †Safrodus |
| Euselachii | Neoselachii | Synechodontiformes †Polyfaciodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/sphenodus.jpg) Euselachii | Neoselachii | Synechodontiformes | Orthacodontidae †Sphenodus |
| Euselachii | Neoselachii | Synechodontiformes | Orthacodontidae †Occitanodus |
| Euselachii | Neoselachii | Synechodontiformes | Pseudonotidanidae †Welcommia |
| Euselachii | Neoselachii | Synechodontiformes | Pseudonotidanidae †Pseudonotidanus |
| Euselachii | Neoselachii | Synechodontiformes | Palaeospinacidae †Antrigoulia |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/synechodus.jpg) Euselachii | Neoselachii | Synechodontiformes | Palaeospinacidae †Synechodus |
| Euselachii | Neoselachii | Synechodontiformes | Palaeospinacidae †Palidiplospinax |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/paraorthacodus.jpg) Euselachii | Neoselachii | Synechodontiformes | Paraorthacodontidae †Paraorthacodus |
| ![Animal picture.](../images/life/gnathostomata/chondrichthyes/macrourogaleus.jpg) Euselachii | Neoselachii | Synechodontiformes | Paraorthacodontidae †Macrourogaleus |
| |
| |