Parasemionotiformes

Parasemionotiformes Temporal range: Induan-Anisian PreꞒ Ꞓ O S D C P T J K Pg N
Albertonia cupidinia fossil
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Infraclass:	Holostei
Order:	†Parasemionotiformes Lehman, 1966
Families
†Parasemionotidae Stensiö, 1932 † Wade, 1940

Parasemionotiformes is an extinct order of neopterygian ray-finned fish that existed globally during the Triassic period. It comprises the families Parasemionotidae and . Many of the included genera are monotypic and most species lived during the Early Triassic epoch.^[1][2]

Parasemionotiforms were normally small to medium-sized fishes. They were predominantly marine.

Parasemionotiformes are one of the earliest clades of the Halecomorphi, the group that comprises the living bowfin (Amia calva) and its extinct relatives.^[3] Parasemionotiforms are the sister group to all other halecomorphs.^[4]

Classification[]

Parasemionotus labordei was the first described parasemionotiform

from the Early Triassic of Canada had large pectoral fins

Jacobulus novus was a small parasemionotiform

Watsonulus eugnathoides from the Early Triassic of Madagascar is one of the best known parasemionotiforms

Candelarialepis argentus from the Early Triassic of Nevada was a medium-sized parasemionotiform

• Order †Parasemionotiformes Lehman, 1966^[5]
  • Family incertae sedis
    • Genus † Ji, 2009
      • †Peia jurongensis Ji, 2009 (type species)
  • Family †Parasemionotidae Stensiö, 1932 (= Ospiidae Stensiö, 1932)
    • Genus †Parasemionotus Piveteau, 1929
      • †Parasemionotus labordei (Priem, 1924) (type species)
      • †Parasemionotus besairiei Lehman et al., 1959
    • Genus †Ospia Stensiö, 1932
      • †Ospia whitei Stensiö, 1932 (type species)
    • Genus †Broughia Stensiö, 1932
      • †Broughia perleididoides Stensiö, 1932 (type species)
    • Genus †Watsonulus Brough, 1939 (= Watsonia Piveteau, 1934)
      • †Watsonulus eugnathoides (Piveteau, 1934) (type species)
    • Genus †Stensionotus Lehman, 1952
      • †Stensionotus intercessus Lehman, 1952 (type species)
      • †Stensionotus dongchangensis Liu et al., 2002
    • Genus †Jacobulus Lehman, 1952
      • †Jacobulus novus Lehman, 1952 (type species)
    • Genus †Thomasinotus Lehman, 1952
      • †Thomasinotus divisus Lehman, 1952 (type species)
    • Genus † Gardiner, 1966
      • †Albertonia cupidinia (Lambe, 1916) (type species)
    • Genus †Lehmanotus Beltan, 1968
      • †Lehmanotus markubai Beltan, 1968 (type species)
    • Genus † Beltan, 1968
      • †Devillersia madagascariensis Beltan, 1968 (type species)
    • Genus † Beltan, 1968
      • †Piveteaunotus ifasiensis Beltan, 1968 (type species)
    • Genus † Beltan, 1980
      • †Icarealcyon malagasium Beltan, 1980 (type species)
    • Genus † Liu et al., 2002
      • †Jurongia fusiformis Liu et al., 2002 (type species)
    • Genus † Liu et al., 2002
      • †Qingshania cercida Liu et al., 2002 (type species)
    • Genus † Liu et al., 2002
      • †Suius brevis Liu et al., 2002 (type species)
    • Genus †Candelarialepis Romano et al., 2019
      • †Candelarialepis argentus Romano et al., 2019 (type species)
  • Family †Promecosominidae Wade, 1940
    • Genus † Wade, 1935
      • †Promecosomina formosa (Woodward, 1890) (type species) (= P. beaconensis Wade, 1935)

See also[]

• List of prehistoric bony fish genera

References[]