Reptilia - Theropoda - Tyrannosauridae

Alternative combinations: Albertosaurus libratus, Alberytosaurus libratus, Deinodon libratus

Synonyms: Albertosaurus incrassatus Cope 1876, Albertosaurus sternbergi Matthew and Brown 1922, Deinodon falculus Cope 1876, Deinodon hazenianus Hay 1902, Deinodon incrassatus Cope 1876, Dryptosaurus falculus Cope 1876, Dryptosaurus hazenianus Hay 1902, Dryptosaurus incrassatus Cope 1876, Dryptosaurus kenabekides Hay 1899, Gorgosaurus sternbergi Matthew and Brown 1922, Gorgosaurus sternbergii Matthew and Brown 1922, Laelaps falculus Cope 1876, Laelaps hazenianus Hay 1902, Laelaps incrassatus Cope 1876

Full reference: L. M. Lambe. 1914. On a new genus and species of carnivorous dinosaur from the Belly River Formation of Alberta, with a description of the skull of Stephanosaurus marginatus from the same horizon. The Ottawa Naturalist 28:13-20

Belongs to Gorgosaurus according to T. R. Holtz 2004

See also Abel 1924, Anonymous 1963, Baird and Horner 1979, Brown 1914, Buckley et al. 2018, Carpenter 1992, Carpenter 1997, Carr 1995, Carr 1999, Carr 2010, Carr et al. 2017, Carr et al. 2011, Cope 1876, Cope 1876, Cope 1876, Cope 1877, Cope 1877, Cope 1892, Currie 1987, Currie 1992, Currie 2000, Currie 2003, Currie 2005, Currie et al. 2003, Currie and Koppelhus 2015, Dalman 2013, Dalman et al. 2018, Drake 1980, Eberth et al. 2001, Foster and Chure 2000, Gauthier 1986, Gilmore 1933, Gilmore 1946, Hay 1899, Hay 1902, Hay 1930, Holtz 2001, Hone et al. 2011, Huene 1926, Huene 1927, Jasinski 2011, Krumenacker et al. 2022, Kuhn 1939, Kurzanov 1976, Lambe 1899, Lambe 1899, Lambe 1902, Lambe 1903, Lambe 1904, Lambe 1904, Lambe 1905, Lambe 1905, Lambe 1914, Lambe 1914, Lambe 1915, Lambe 1916, Lambe 1917, Lapparent 1962, Lawson 1976, Longrich 2008, Lucas et al. 1990, Mader and Bradley 1989, Maleev 1955, Malkani 2006, Matthew and Brown 1922, McCrea et al. 2014, McDonald et al. 2018, Molnar 1974, Molnar 1978, Molnar 1980, Molnar 1991, Molnar et al. 1990, Nopcsa 1901, Norell and Makovicky 1999, Novas 1996, Olshevsky 1981, Parks 1924, Paul 1988, Paulina Carabajal and Currie 2012, Powell 1973, Rauhut 2003, Rozhdestvensky 1965, Russell 1930, Russell 1935, Russell 1964, Russell 1966, Russell 1970, Ryan 1997, Sakagami and Kawabe 2020, Sanz et al. 1992, Schwimmer and Best 1989, Steel 1970, Sternberg 1917, Sternberg 1918, Stromer 1915, Stromer 1931, Stromer 1934, Stromer 1934, Stromer 1936, Sullivan et al. 2005, Tatarinov 1964, Thomson et al. 2013, Thulborn 1984, Torres-Rodríguez et al. 2010, Turner et al. 2007, Urban and Lamanna 2006, Walker 1964, Wilfarth 1940, Zangerl 1956 and Zanno and Makovicky 2011

Sister taxa: none

Type specimens:

• Gorgosaurus libratus: CMN 2120, a skull (scapulacoracoid). Its type locality is RTMP Quarry 36, Berry Creek, which is in a Campanian channel lag sandstone in the Dinosaur Park Formation of Canada.
• Dryptosaurus kenabekides: ANSP 9530, a set of teeth (teeth). Its type locality is Judith River badlands (USGS), which is in a Campanian/Campanian terrestrial horizon in the Judith River Formation of Montana.
• Gorgosaurus sternbergi: AMNH 5664. Its type locality is RTMP Quarry 6, Sand Creek [AMNH], which is in a Campanian channel sandstone in the Dinosaur Park Formation of Canada.
• Laelaps falculus: AMNH 3959, a tooth. Its type locality is Cow Island, which is in a Campanian/Campanian terrestrial horizon in the Judith River Formation of Montana.
• Laelaps hazenianus: AMNH 3957.
• Laelaps incrassatus: AMNH 3962, a skull.

Ecology: ground dwelling carnivore

Average measurements (in mm): femur circumference 249.5, fibula circumference 89.0, tibia circumference 237.3

Distribution:

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Specimen images are retrieved through the ePANDDA API.