Paraisurus
Temporal range:
Teeth of P. macrorhizus
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Chondrichthyes
Superorder:
Selachimorpha
Order:
Lamniformes
Family:
†Paraisuridae

Herman, 1979[1]
Genus:
†Paraisurus

Glickman, 1957[2]
Type species
†Paraisurus macrorhizus
Other species
  • †Paraisurus compressus
    Sokolov, 1978[4]
  • †Paraisurus elegans
    Sokolov, 1978
  • †Paraisurus lanceolatus
    Sokolov, 1978
Synonyms
Species synonymy
  • P. macrorhizus
      • Oxyrhina macrorhiza
        Pictet & Campiche, 1858
    P. compressus
      • Paraisurus amudarjensis
        Mertinienė, Nessov, & Nazarkin, 1994[5]

Paraisurus is an extinct genus of mackerel sharks that lived during the Cretaceous. It contains four valid species, which have been found in Europe, Asia, North America, and Australia.[6] A fifth species, P. amudarjensis, is now considered a synonym of P. compressus.[7] While this genus is mostly known from isolated teeth, an associated dentition of P. compressus was found in the Weno Formation of Texas.[8] It went extinct around the Albian-Cenomanian boundary, as a supposed Coniacian occurrence of "P. sp." is likely a misidentified pseudoscapanorhynchid.[9]

References

  1. ↑ Herman, J. (1979). "Réflexions sur la systématique des Galeoidei et sur les affinités du genre Cetorhinus à l'occasion de la découverte d'éléments de la denture d'un exemplaire fossile dans les Sables du Kattendijk à Kallo (Pliocène inférieur, Belgique)". Annales de la Société géologique de Belgique. 102 (1): 357–377.
  2. ↑ Glickman, L.S. (1957). "O geneticheskoy svyazi semeystva Lamnidae i Odontaspidae i novykh rodakh verkhnemelovykh lamnid [On the genetic relationship between the families Lamnidae and Odontaspidae and new genera of Upper Cretaceous lamnids]" (PDF). Trudy Geologicheskogo Muzeya Imeni A.P. Karpinskogo. 1: 110–117.
  3. ↑ Pictet, F.J.; Campiche, G. (1858–1860). Description des fossiles du terrain crétacé des environs de Sainte-Croix. Première partie. Geneva: J. Kessmann & H. Georg.
  4. ↑ Sokolov, M.I. (1978). Zuby akul kak rukovodyashchiye iskopayemyye pri zonalʹnom raschlenenii melovykh otlozheniy Turanskoy plity [Shark teeth as guiding fossils in the zonal division of the Cretaceous deposits of the Turan Plate]. Moscow: Nedra.
  5. ↑ Mertinienė, R.; Nessov, L.; Nazarkin, M. (1994). "Cretaceous sharks of the genus Paraisurus in Uzbekistan and Lithuania". Geologija. 17: 139–143.
  6. ↑ Cappetta, H. (2012). Handbook of Paleoichthyology. Volume 3E. Chondrichthyes. Mesozoic and Cenozoic Elasmobranchii: Teeth. Munich: Verlag Dr. Friedrich Pfeil. ISBN 978-3-89937-148-2.
  7. ↑ Amalfitano, J. (2021). "Reappraisal of the record of the genus Paraisurus (Chondrichthyes; Lamniformes) from the Lower Cretaceous of northern Italy". Bollettino della Società Paleontologica Italiana. 60 (2): 157–167. doi:10.4435/BSPI.2021.07.
  8. ↑ Welton, B.J.; Farish, R.F. (1993). The Collector's Guide to Fossil Sharks and Rays from the Cretaceous of Texas (PDF). Lewisville, TX: Before Time. ISBN 0-9638394-0-3.
  9. ↑ Siversson, M.; Machalski, M. (2017). "Late late Albian (Early Cretaceous) shark teeth from Annopol, Poland". Alcheringa. 41 (4): 433–463. Bibcode:2017Alch...41..433S. doi:10.1080/03115518.2017.1282981. S2CID 133123002.


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