Tylosaurus

Tylosaurus
Temporal range: Turonian-Maastrichtian,
~
Mounted cast of the T. proriger "Bunker" specimen (KUVP 5033)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Clade: Mosasauria
Family: Mosasauridae
Clade: Russellosaurina
Subfamily: Tylosaurinae
Genus: Tylosaurus
Marsh, 1872
Type species
Tylosaurus proriger
(Cope, 1869)
Other species
  • T. nepaeolicus (Cope, 1874)
  • T. bernardi (Dollo, 1885)
  • T. gaudryi (Thevenin, 1896)
  • T. ivoensis (Persson, 1963)
  • T. iembeensis (Antunes, 1964)
  • T. pembinensis (Nicholls, 1988)
  • T. saskatchewanensis Jiménez-Huidobro et al., 2018
Disputed or unpublished
Synonyms
List of synonyms
  • Synonyms of genus
      • Elliptonodon Emmons, 1858
      • Rhamphosaurus Cope, 1872
      • Rhinosaurus Marsh, 1872
      • Hainosaurus(?) Dollo, 1885
    Synonyms of T. proriger
      • Macrosaurus proriger Cope, 1869
      • Macrosaurus pririger Cope, 1869
      • Liodon proriger Cope, 1869
      • Rhinosaurus proriger Marsh, 1872
      • Rhinosaurus micromus Cope, 1872
      • Tylosaurus dyspelor Leidy, 1873
      • Tylosaurus micromus Merriam, 1894
    Synonyms of T. nepaeolicus
      • Liodon nepaeolicus Cope, 1874
      • Tylosaurus kansasensis? Everhart, 2005
    Synonyms of T. bernardi
      • Hainosaurus bernardi Dollo, 1885
    Synonyms of T. gaudryi
      • Mosasaurus gaudryi Thevenin, 1896
      • Hainosaurus gaudryi Lingham-Soliar, 1992
    Synonyms of T. ivoensis
      • Leiodon lundgreni Schröder, 1885
      • Mosasaurus hoffmanni ivoensis Persson, 1963
      • Mosasaurus ivoensis Russell, 1967
      • Hainosaurus ivoensis Lindgren, 1998
    Synonyms of T. iembeensis
      • Mosasaurus iembeensis Antunes, 1964
    Synonyms of T. pembinensis
      • Hainosaurus pembinensis Nicholls, 1988

Tylosaurus (/ˌtˈlˈsɔːrəs/; "knob lizard") is a genus of russellosaurine mosasaur (an extinct group of predatory marine lizards) that lived about 92 to 66 million years ago during the Turonian to Maastrichtian stages of the Late Cretaceous. Its fossils have been found primarily around North Atlantic Ocean including in North America, Europe, and Africa.