| Paraisurus Temporal range:
| |
|---|---|
| |
| Teeth of P. macrorhiza | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Division: | Selachii |
| Order: | Lamniformes |
| Family: | †Paraisuridae Herman, 19792 |
| Genus: | †Paraisurus Glickman, 19571 |
| Type species | |
| †Oxyrhina macrorhiza | |
| Species | |
| Synonyms | |
Paraisurus is an extinct genus of mackerel sharks that lived during the Cretaceous period. It contains four valid species, which have been found in Europe, Asia, North America, and Australia.7 A fifth species, P. amudarjensis, is considered by some paleontologists a possible synonym of P. compressus, but is debated.8 While this genus is mostly known from isolated teeth, an associated dentition of P. compressus was found in the Weno Formation of Texas.9 It went extinct around the Albian-Cenomanian boundary, as a supposed Coniacian occurrence of "P. sp." is likely a misidentified pseudoscapanorhynchid.10
References
References
- 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.
- Herman, Jacques (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.
- 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.
- 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.
- "PBDB Taxon".
- Mertinienė, R.; Nessov, L.; Nazarkin, M. (1994). "Cretaceous sharks of the genus Paraisurus in Uzbekistan and Lithuania". Geologija. 17: 139–143.
- 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.
- 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 (inactive 12 July 2025).
{{cite journal}}: CS1 maint: DOI inactive as of July 2025 (link) - 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.
- 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.