After Carroll, 1988 and Williams, 1999-2002

<==o †Hybodontidae Owen, 1846 [paraphyletic?]
   |?- †Lambdodus Miss. Eu. NA. 
   |?- †“Lissodus” grewincki (Dalinkevicius, 1935)
   |?- †“Lissodus” multicuspidatus (Duffin & Thies, 1997)
   |?- †Monocladodus Penn. NA. 
   |-- †Acrodonchus M.-U. Trias. Eu. 
   |--o †Acronemus [sr. synon to Acrodus??]
   |  `-- †A. tuberculatus
   |?- †Arctacanthus uncinatus Nielsen, 1932 [Hamatus] M. Perm. NA. Gr.
   |?-o †Carcharopsis [Dicrenodus] U. Dev. Miss.
   |  |-- †C. prototypus Agassiz, 1843
   |  `-- †C. wortheni (Newberry & Worthen, 1866)
   |-- †Carinacanthus U. Trias. NA. 
   |-- †Coelosteus Miss. NA. 
   |-- †Dicrenodus [Carchariopsis Pristicladodus] Miss.-Penn. Eu. Miss. NA. 
   |-- †Doratodus tricuspidatus (Schmid, 1861) M.-U. Trias. Eu. 
   |-- †Echinodus paradoxus Davis, 1848, Penn. Eu. 
   |?-o †Egertonodus Maisey, 1987 [Hybodus; Xystrodus; Leiacanthus]
   |  |-- †E. basanus (Egerton, 1845) [Hybodus basanus Egerton, 1845]
   |  `-- †E. fraasi (Brown, 1900) [Hybodus fraasi Brown, 1900]
   |-- †Eoorodus typus (Branson, 1914) U. Dev. NA.
   |-- †Hybocladodus plicatus St. John & Worthen, 1875, Miss. NA. 
   |-- †Hybodonchus M.-U. Trias. Eu. 
   |--o †Hybodus Agassiz, 1837 [Leiacanthus; Meristodon; Orthybodus; Parhybodus; ?Selachidea; Xystrodus] ?U. Perm. M. Trias.-U. Cret. Eu. L. Trias. Spits. L.-U. Trias. Gr. L. Trias.-U. Cret. NA. U. Trias. EAs. U. Trias.-Paleoc. Af. Jur.-Cret. Aus.
   |  |?- †H. allegheniensis
   |  |?- †H. brevicostatus
   |  |-- †H. bugarensis Pla, Márquez-Aliaga & Botella, 2013
   |  |?- †H. butleri Thurmond, 1971
   |  |-- †H. delabechei Woodward, 1889 (non Charlesworth, 1839)
   |  |?-+-- †H. grossiconus Agassiz, 1843
   |  |  |-- †H. sp. 1. [Underwood, 2002]
   |  |  |-- †H. sp. 2. [Underwood, 2002]
   |  |  |-- †H. sp. [Schaeffer & Patterson, 1984]
   |  |  `-- †H. ensis Woodward, 1916
   |  |-- †H. hauffiensis Fraas, 1895 sensu Coates & Gess, 2007 [H. hauffanus; H. hauffianus]
   |  |?- †H. medius Agassiz, 1843
   |  |?- †H. montanensis Case, 1978
   |  |?- †H. nevadensis Wemple, 1946
   |  |?- †H. obtusus Agassiz, 1843
   |  |?- †H. ornatissimus
   |  |?- †H. parvidens
   |  |-- †H. plicatilis Agassiz, 1843 [H. plicatilus Agassiz, 1843 (lapsus calami?)]
   |  |-- †H. reticulatus Agassiz, 1837 [type]
   |  |?- †H. shastensis Wemple, 1946
   |  |?- †H. sp.
   |  `?- †H. vestitus
   |?-o †Lambdodus [Dicrontodus, Dicrentrodus]
   |  |-- †L. costatus (St. John & Worthen, 1875)
   |  `-- †L. hammulus
   |?- †Limnoselache
   |-- †Mesodmodus Miss. NA.
   |?-o †“Meristodon”
   |  |-- †“M.” paradoxus
   |  |-- †“M.” storeri
   |  `-- †“M.” sublaevis
   |-- †Nemacanthus [Desmacanthus, Nematacanthus] ? L. Trias. Gr. M. Trias.-U. Jur. Eu. U. Trias. Spits. NA.
   |-- †Orthacodus U. Jur.-L. Cret. Eu.
   |?- †Petrodus patelliformis McCoy, 1848a [Octinaspis, Ostinaspis] Miss.-Penn. Eu. Penn. NA. [based on dermal denticles]
   |-- †Priohybodus arambourgi d'Erasmo, 1960, U. Jur.-L. Cret. Af. 
   |-- †Pristacanthus U. Jur. Eu.
   |-- †Prohybodus L. Cret. NAf.
   |-- †Protacrodus U. Dev. Eu.
   |-- †Scoliorhiza U. Trias. NA.
   |-- †Styracodus striatulus (McCoy, 1848) [Centrodus] Penn. Eu.
   |?- †Tribodus limae Brito & Ferreira, 1989, L. Cret. SA
   |?- †Trichorhipis praecursor Zangerl, 1973, Penn. NA.
   `-- †Xystrodus U. Perm. Eu.

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