After Motani, 1998, 1999, Nicholls & Manabe, 2001, Chen, Motani, Cheng, Jiang & Rieppel, 2014b, and Motani, Jiang, Chen, Tintori, Rieppel, Ji & Huang, 2014

Family-level taxonomy of ichthyopterygians

<==o †Ichthyosauromorpha Motani, Jiang, Chen, Tintori, Rieppel, Ji & Huang, 2014 (ichthyosaurs and relatives; kalaliskomaiset matelijat)
   |?- †Wumengosaurus delictomandibularis Jiang, Rieppel, Motani, Hao, W-C. Sun, Schmitz, & Z-Y. Sun, 2008 [originally treated as nothosauroid sauropterygian]
   |--o †Hupehsuchia Carroll & Dong, 1991
   |  |-- †Nanchungosaurus suni Wang, 1959; L.Trias. SEAs. [Nanchangosauridae Wang, 1959]
   |  `--+-- †Eohupehsuchus brevicollis Chen, Motani, Cheng, Jiang & Rieppel, 2014c
   |     `--o †Hupehsuchidae Young, 1972
   |        |-- †Hupehsuchus nanchengensis Young, 1972; L.Trias. SEAs.
   |        `--o †Parahupehsuchinae Chen, Motani, Cheng, Jiang & Rieppel, 2015
   |           |-- †Eretmorhipis carrolldongi Chen, Motani, Cheng, Jiang & Rieppel, 2015 [IVPP.V4070; WGSC.V26020]
   |           `-- †Parahupehsuchus longus Chen, Motani, Cheng, Jiang & Rieppel, 2014a; L.Trias. SEAs.
   `--o †Ichthyosauriformes Motani, Jiang, Chen, Tintori, Rieppel, Ji & Huang, 2014
      |--o †Nasorostra Jiang, Motani, Huang, Tintori, Hu, Rieppel, Fraser, Ji, Kelley, Fu & Zhang, 2016
      |  |-- †Cartorhynchus lenticarpus Motani, Jiang, Chen, Tintori, Rieppel, Ji & Huang, 2014
      |  `-- †Sclerocormus parviceps Jiang, Motani, Huang, Tintori, Hu, Rieppel, Fraser, Ji, Kelley, Fu & Zhang, 2016
      `--o †Ichthyopterygia Owen, 1840
         |?- †Thaisaurus chonglakmanii Mazin, Suteethorn, Buffenaut, Jaeger & Helmcke-Ingavat, 1991
         |?- †Isfjordosaurus minor Motani, 1999 [Pessopteryx]
         |-- †Utatsusaurus hataii Shikama, Kamei & Murata, 1978
         |-- †Parvinatator wapitiensis Nicholls & Brickman, 1995
         `--o Eoichthyosauria Motani, 1999b [Ichthyosauria sensu lato]
            |--o †Grippidae Wiman, 1929 [Grippidia Wiman, 1929]
            |  |?- †Gulosaurus helmiCuthbertson, Russell & Anderson, 2013
            |  |-- †Grippia longirostris Wiman, 1929
            |  `--o †Chaohusaurus Young & Dong, 1972 [Anhuisaurus Chen, 1985; Chensaurus (Chen, 1985) Mazin et al., 1991]
            |     |-- †C. geishanensis Young & Dong, 1972 [Anhuisaurus faciles Chen, 1985; Chensaurus faciles (Chen, 1985) Mazin et al., 1991]
            |     |?- †C. chaoxianensis (Chen, 1985) [Anhuisaurus chaoxianensis Chen, 1985; Chensaurus chaoxianensis (Chen, 1985) Mazin et al., 1991]
            |     `-- †C. zhangjiawanensis Chen, Sander, Long & Wang, 2013
            `-- †Ichthyosauria Blainville, 1835

Ichthyopterygia incertae sedis:

†Protoichthyosauridae Appleby, 1979
    †Protoichthyosaurus prosostealis Appleby, 1979

Nomina dubia:

    †Svalbardosaurus crassidens Mazin, 1981
    †Shastasaurus altispinus Merriam, 1902
    †Shastasaurus carinthiacus Huene, 1925
    †Shastasaurus careyi Merriam, 1902
    †Pessopteryx arctica  Wiman, 1910
    †Pessopteryx nisseri Wiman, 1910
    †Pessopteryx pinguis  Wiman, 1910

After Jiang, Motani, Huang, Tintori, Hu, Rieppel, Fraser, Ji, Kelley, Fu & Zhang, 2016

<==o †Ichthyosauromorpha
   |-- †Hupehsuchia
   `--o †Ichthyosauriformes
      |--o †Nasorostra
      |  |-- †Cartorhynchus
      |  `-- †Sclerocormus
      `--o †Ichthyopterygia
         |-- †Chaohusaurus geishanensis
         |-- †Chaohusaurus chaoxianensis
         |-- †Chaohusaurus zhangjiawanensis
         `--+-- †Utatsusaurus
            |-- †Parvinatator
            |--o †Grippidia
            |  |-- †Grippia
            |  `-- †Gulosaurus
            `-- †Ichthyosauria

  • Jiang, D.-Y., Motani, R., Huang, J.-D., Tintori, A., Hu, Y.-C., Rieppel, O., Fraser, N. C., Ji, C., Kelley, N. P., Fu, W.-L. & Zhang, R., 2016: A large aberrant stem ichthyosauriform indicating early rise and demise of ichthyosauromorphs in the wake of the end-Permian extinction.
    –Scientific Reports: Vol. 6, Art. nr. 26232 [doi: 10.1038/srep26232]

After Motani, Jiang, Chen, Tintori, Rieppel, Ji & Huang, 2014 (C. Ji et al., in prep.)

<==o †Ichthyosauromorpha
   |-- †Hupehsuchia
   `--o †Ichthyosauriformes
      |-- †Cartorhynchus
      `--o †Ichthyopterygia
         |--o †Chaohusaurus
         |  |-- †C. geishanensis
         |  |-- †C. chaoxianensis
         |  `-- †C. zhangjiawanensis
         `--+--o †Grippidia
            |  |-- †Utatsusaurus
            |  |-- †Parvinatator
            |  `--+-- †Grippia
            |     `-- †Gulosaurus
            `-- †Ichthyosauria

  • Motani, R., Jiang, D.-Y., Chen, G.-B., Tintori, A., Rieppel, O., Ji, C. & Huang, J.-D., 2014: A basal ichthyosauriform with a short snout from the Lower Triassic of China.
    –Nature: in press [doi: 10.1038/nature13866]

After Chen, Motani, Cheng, Jiang & Rieppel, 2014b

<==o
   |-- †Thalattosauriformes
   `--+-- †Wumengosaurus
      `--+-- †Ichthyopterygia
         `--+-- †Nanchungosaurus
            `-- †Hupehsuchus

  • Chen, X.-h., Motani, R., Cheng, L., Jiang, D.-y. & Rieppel, O., 2014b: The Enigmatic Marine Reptile Nanchangosaurus from the Lower Triassic of Hubei, China and the Phylogenetic Affinities of Hupehsuchia.
    –Plos One: Vol. 9, #7, pp. e102361 (1-13) [doi: 10.1371/journal.pone.0102361]

Reference(s):