Semionotiformes

Semionotiformes is an order of ray-finned fish known from the Middle Triassic (Anisian)[1] to the Late Cretaceous (Maastrichtian).[2] Their closest living relatives are gars (Lepisosteidae), with both groups belonging to the clade Ginglymodi within the Holostei.[1] The group includes both freshwater (Semionotidae) and marine (Callipurbeckiidae, Macrosemiidae) adapted forms.[3] Many members of the family Macrosemiidae (which are usually included in Semionotiformes but sometimes placed in their own order), have elongated dorsal fins, often associated with an adjacent area of skin which was free of scales. These fins were likely undulated for use in precision swimming. The body morphology of macrosemiids suggests that they were slow swimmers that were capable of maneuvering around complex topography, such as reef environments.[4]

Semionotiformes
Temporal range:
Fossil specimen of Macrosemimimus fegerti
Fossil of Macrosemius
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Clade: Neoginglymodi
Order: †Semionotiformes
Arambourg & Bertini 1958 sensu López-Arbarello 2012
Type genus
†Semionotus
Agassiz, 1843
Families
Synonyms

Macrosemiiformes Grande & Bemis 1998

Classification
  • Order †Semionotiformes Arambourg & Bertin 1958 sensu López-Arbarello 2012[5][6][7][8]
    • Genus ?†Orthurus Kner 1866
    • Genus †Sangiorgioichthys Tintori & Lombardo 2007
    • Genus †Luoxiongichthys Wen et al. 2011
    • Genus †Aphanepygus Bassani 1879
    • Genus †Placidichthys Brito 2000
    • Family †Pleurolepididae Lütken 1871
      • Genus †Pleurolepis Agassiz 1863 non Quenstedt 1852
    • Family †Macrosemiidae Wagner 1860a corrig. Cope 1889 sensu Murray & Wilson 2009 [Macrosemii Wagner 1860a]
      • Genus †Eusemius Vetter 1881
      • Genus †Blenniomoeus Costa 1850 [Calignathus Costa 1853]
      • Genus †Enchelyolepis Woodward 1918
      • Genus †Palaeomacrosemius Ebert, Lane & Kolbl-Ebert 2016
      • Genus †Voelklichthys Arratia & Schultze 2012
      • Genus †Notagogus Agassiz 1833-1844 [Neonotagogus Bravi 1994]
      • Genus †Agoultichthys Murray & Wilson 2009
      • Genus †Histionotus Egerton 1854
      • Genus †Propterus Agassiz 1833-1844 [Rhynchoncodes Costa 1850]
      • Genus †Macrosemiocotzus González-Rodríguez, Applegate & Espinosa-Arrubarrena 2004
      • Genus †Legnonotus Egerton 1853
      • Genus †Macrosemius Agassiz 1833-1844
    • Family †Semionotidae Woodward 1890 sensu López-Arbarello 2012
    • Family †Callipurbeckiidae López-Arbarello 2012 [Paralepidotidae Hadding 1919 ex Lund 1920]
      • Genus †Occitanichthys López-Arbarello & Wencker 2016
      • Genus †Semiolepis Lombardo & Tintori 2008
      • Genus †Paralepidotus Stolley 1919
      • Genus †Macrosemimimus Schröder, López-Arbarello & Ebert 2012
      • Genus †Tlayuamichin López-Arbarello & Alvarado-Ortega 2011
      • Genus †Callipurbeckia López-Arbarello 2012

Timeline of genera
Hadrodus priscus tooth, Menuha Formation (Upper Cretaceous), southern Israel
CenozoicMesozoic EraPaleozoic EraQuaternaryNeogenePaleogeneCretaceousJurassicTriassicPermianSphathiurusOshuniaParalepidosteusOligopleurusCallopteusHeterostrophusTetragonolepisAustrolepidotusPrionopleurusProlepidotusDapediumSargodonDandyaPristiosomusHemicalypterusCorunegenysPlesiolepidotusLepidotusOrthurusAphelolepisSerrolepisSinosemionotusEnigmatichthysAsialepidotusAllelepidotusAlleiolepisSemionotusEosemionotusPericentrophusArchaeolepidotusParalepidotusAcentrophorusCenozoicMesozoic EraPaleozoic EraQuaternaryNeogenePaleogeneCretaceousJurassicTriassicPermian

References
  1. Romano, Carlo (2021). "A Hiatus Obscures the Early Evolution of Modern Lineages of Bony Fishes". Frontiers in Earth Science. 8: 672. doi:10.3389/feart.2020.618853. ISSN 2296-6463.
  2. Blanco, Alejandro; Szabó, Márton; Blanco-Lapaz, Àngel; Marmi, Josep (January 2017). "Late Cretaceous (Maastrichtian) Chondrichthyes and Osteichthyes from northeastern Iberia". Palaeogeography, Palaeoclimatology, Palaeoecology. 465: 278–294. Bibcode:2017PPP...465..278B. doi:10.1016/j.palaeo.2016.10.039.
  3. Cavin, Lionel; Deesri, Uthumporn; Olive, Sébastien (2020-03-18). "Scheenstia bernissartensis (Actinopterygii: Ginglymodi) from the Early Cretaceous of Bernissart, Belgium, with an appraisal of ginglymodian evolutionary history". Journal of Systematic Palaeontology. 18 (6): 513–527. Bibcode:2020JSPal..18..513C. doi:10.1080/14772019.2019.1634649. ISSN 1477-2019. S2CID 199631685.
  4. Cawley, John J.; Marramà, Giuseppe; Carnevale, Giorgio; Villafaña, Jaime A.; López‐Romero, Faviel A.; Kriwet, Jürgen (February 2021). "Rise and fall of †Pycnodontiformes: Diversity, competition and extinction of a successful fish clade". Ecology and Evolution. 11 (4): 1769–1796. doi:10.1002/ece3.7168. ISSN 2045-7758. PMC 7882952. PMID 33614003.
  5. Haaramo, Mikko (2007). "Ginglymodi – gars and relatives". Mikko's Phylogeny Archive. Retrieved 30 December 2016.
  6. Nelson, Joseph S.; Grande, Terry C.; Wilson, Mark V. H. (2016). Fishes of the World (5th ed.). John Wiley & Sons. ISBN 9781118342336.
  7. van der Laan, Richard (2016). "Family-group names of fossil fishes". {{cite journal}}: Cite journal requires |journal= (help)
  8. López-Arbarello, Adriana (2012). "Phylogenetic Interrelationships of Ginglymodian Fishes (Actinopterygii: Neopterygii)". PLOS ONE. 7 (7): e39370. Bibcode:2012PLoSO...739370L. doi:10.1371/journal.pone.0039370. PMC 3394768. PMID 22808031.
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