page_title: Theriosuchus
section_title: Taxonomy
hierarchical_section_title: Theriosuchus / Taxonomy
caption_attribution_description: Genus—Theriosuchus. Fig. 3. Upper view of skull of Theriosuchus pusillus. Fig. 4. Under view of the same skull. Fig. 5. Side view of facial part of the same skull. Fig. 6. Crowns of five teeth, a, b, c, d, e, in fig. 5, magnified 3 diameters. Fig. 7. Upper view of cranium and inner view of left maxillary, Theriosuchus pusillus. Fig. 8. Frontal bone, Theriosuchus pusillus. Fig. 9. Part of left maxillary, ib. Fig. 10. Part of right maxillary, ib. Fig. 11. Left maxillary, inner side view, ib. Fig. 12. Right maxillary, young individual, ib. Fig. 13. Right maxillary, young individual, ib. Fig. 14. Left dentary, side view, mature individual. Fig. 15. Dentary and angular parts of mandible, under view, ib. Fig. 16. Dentary and fragments of mandible, inner side view, ib. Fig. 17. Fore part of right dentary, side view, ib. Fig. 18. Portion of left dentary, ib. The figures are of the natural size save where otherwise expressed. From the Middle Purbeck; in the British Museum.
context_page_description: Theriosuchus is an extinct genus of atoposaurid mesoeucrocodylian from Late Jurassic to Early Cretaceous of Europe, Southeast Asia and western North America, with fragmentary records from Middle Jurassic and Early Cretaceous sites in China, Morocco, and Scotland.
context_section_description: Three valid species are currently recognized: Theriosuchus pusillus from southern England, T. grandinaris from Thailand, and T. morrisonensis from the Morrison Formation of North America. Theriosuchus was previously assigned to Atoposauridae, but a 2016 cladistic analysis recovered it as a neosuchian more closely related to members of the family Paralligatoridae than to atoposaurids.
  Two species previously assigned to this genus, Theriosuchus ibericus and T. symplesiodon, have been reassigned to the new genus Sabresuchus. On the other hand, Theriosuchus guimarotae from Portugal has been reassigned to Knoetschkesuchus.
caption: Skull elements of T. pusillus
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