Semionotiformes

Semionotiformes
Temporal range: Late Permian-Late Cretaceous
Scheenstia maximus from the Solnhofen Limestone, in South Germany
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
(unranked): Actinopteri
Subclass: Neopterygii
Order: †Semionotiformes
Families
  • Dapediidae
  • Semionotidae
  • Hadrodontidae

Semionotiformes ("flag-back form") is an order of primitive, ray-finned, primarily freshwater fish from the Triassic to the Cretaceous. The best-known genus is Semionotus of Europe and North America.

Hadrodus prisca tooth, Menuha Formation (Upper Cretaceous), southern Israel

Timeline of genera

Cenozoic Mesozoic Era Paleozoic Era Quaternary Neogene Paleogene Cretaceous Jurassic Triassic Permian Sphathiurus Oshunia Paralepidosteus Oligopleurus Callopteus Heterostrophus Tetragonolepis Austrolepidotus Prionopleurus Prolepidotus Dapedium Sargodon Dandya Pristiosomus Hemicalypterus Corunegenys Plesiolepidotus Lepidotus Orthurus Aphelolepis Serrolepis Sinosemionotus Enigmatichthys Asialepidotus Allelepidotus Alleiolepis Semionotus Eosemionotus Pericentrophus Archaeolepidotus Paralepidotus Acentrophorus Cenozoic Mesozoic Era Paleozoic Era Quaternary Neogene Paleogene Cretaceous Jurassic Triassic Permian

References

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