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Actinistia Temporal range: Devonian–Recent PreꞒ Ꞓ O S D C P T J K Pg N
West Indian Ocean coelacanth
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Sarcopterygii
Class:	Actinistia Cope, 1871
Daughter taxa
Orders Coelacanthiformes Families Rebellatricidae Genera Indocoelacanthus Spermatodus
Synonyms
Coelacanthimorpha

Actinistia is a subclass of mostly fossil lobe-finned fishes. This subclass contains the coelacanths, including the two living coelacanths, the West Indian Ocean coelacanth and the king of the sea.

Taxonomy

• Class Sarcopterygii (lobe-finned fishes and tetrapods)
  • Subclass Actinistia
    • Family Miguashaiidae (Devonian)
      • Miguashaia
    • Family Diplocercidae (Devonian and Lower Carboniferous)
      • Dictyonosteus
      • Diplocercides (Nesides)
    • Family Hadronectoridae
      • Allenypterus
      • Hadronector
      • Holopterygius
      • Lochmocercus
      • Polyosteorhynchus
      • Spermatodus
    • Family Rhabdodermatidae (Primarily Carboniferous)
      • Caridosuctor
      • Rhabdoderma
      • Sassenia
    • Family Laugiidae (Lower Triassic to Lower Cretaceous)
      • Coccoderma
      • Laugia
      • Trachymetopon
    • Order Coelacanthiformes (modern coelacanths and their most recent ancestors)

Phylogeny

The following cladograms are based on multiple sources.

See also

• Lazarus taxon

References

1. Wendruff, A. J.; Wilson, M. V. H. (2012). "A fork-tailed coelacanth, Rebellatrix divaricerca, gen. et sp. nov. (Actinistia, Rebellatricidae, fam. nov.), from the Lower Triassic of Western Canada". Journal of Vertebrate Paleontology. 32 (3): 499–511. doi:10.1080/02724634.2012.657317.
2. Gallo, V., M.S.S. de Carvalho, & H.R.S. Santos (2010). "New occurrence of †Mawsoniidae (Sarcopterygii, Actinistia) in the Morro do Chaves Formation, Lower Cretaceous of the Sergipe-Alagoas Basin, Northeastern Brazil". Boletim do Museu Paraense Emílio Goeldi. 5 (2): 195–205.{{cite journal}}: CS1 maint: multiple names: authors list (link)
3. Long, J. A. (1995). The rise of fishes: 500 million years of evolution. Baltimore: Johns Hopkins University Press.
4. Cloutier, R. & Ahlberg, P. E. (1996). Morphology, characters, and the interrelationships of basal sarcopterygians. pp. 445–479.{{cite book}}: CS1 maint: multiple names: authors list (link)
5. Clement, G. (2005). "A new coelacanth (Actinistia, Sarcopterygii) from the Jurassic of France, and the question of the closest relative fossil to Latimeria". Journal of Vertebrate Paleontology. 25 (3): 481–491. doi:10.1671/0272-4634(2005)025[0481:ancasf]2.0.co;2.

• Lobe-finned fish
• Living fossils
• Live-bearing fish
• Ovoviviparous fish
• Devonian first appearances