Lorosuchus is an extinct genus of sebecid mesoeucrocodylian known from the Río Loro Formation in Tucumán Province of northwestern Argentina.

[1] Lorosuchus is known from the holotype PVL 6219, a nearly complete skull found articulated with the lower jaws and fragmentary postcranial remains.

It was collected at the southern end of Medina Range, near the El Cadillal Lake from the Río Loro Formation, dating to the Thanetian or the Selandian stage of the Middle to Late Paleocene, about 61.7 to 55.8 million years ago.

[2] Lorosuchus is characterized by a unique combination of characters, including five autapomorphies such as an elevated narial rim and the presence of a crest on the anteromedial margins of both premaxillae.

[1] Below is a cladogram from Pol and Powell (2011) showing the placement of Lorosuchus within Sebecosuchia:[1] Chimaerasuchus Sphagesaurus Pehuenchesuchus Cynodontosuchus Pabwehshi Stratiotosuchus Baurusuchus pachecoi Baurusuchus salgadoensis Bergisuchus Iberosuchus Lorosuchus Barinasuchus Ayllusuchus Bretesuchus Lumbrera form Langstonia Sebecus Zulmasuchus