List of dinosaur specimens preserved with agonistic and feeding traces

This list of dinosaur specimens preserved with agonistic behavior and/or feeding traces enumerates those dinosaur specimens which bear traces of aggressive behavior or evidence that the specimen was fed upon by another animal prior to fossilization. Traces preserved in bone that shows signs of healing confirm that the injury was obtained during life and can be a considered a pathology. Traces that show no sign of healing may have been inflicted either too shortly before death for healing to occur or afterwards, and therefore cannot technically be demonstrated to be pathologies.

Theropods Dromaeosaurids Taxon Nickname Catalogue number Institution Age Unit Country Description Images Saurornitholestes langstoni Not given TMP 1988.121.0039 Royal Tyrrell Museum of Palaeontology Campanian Dinosaur Park Formation Partial skeleton of Saurornitholestes langstoni including a dentary with toothmarks left by a juvenile tyrannosaurid.Jacobsen, A.R. (2001). Tooth-marked small theropod bone: An extremely rare trace. p. 58-63. In: Mesozoic Vertebrate Life. Ed.s Tanke, D. H., Carpenter, K., Skrepnick, M. W. Indiana University Press. Velociraptor mongoliensis Fighting Dinosaurs MPC-D 100/25 Mongolian Palaeontological Center Campanian Djadokhta Formation Individual of Velociraptor mongoliensis locked in catastrophic combat with Protoceratops andrewsi.

Ornithomimids Taxon Nickname Catalogue number Institution Age Unit Country Description Images Deinocheirus mirificus Not given MPC-D 100/18 (holotype) Mongolian Palaeontological Center Campanian Nemegt Formation Deceased individual of Deinocheirus mirificus that was fed upon by Tarbosaurus bataar.

Tyrannosaurids Taxon Nickname Catalogue number Institution Age Unit Country Description Images Gorgosaurus libratus Not given TMP 2009.12.14 Royal Tyrrell Museum of Palaeontology Campanian Dinosaur Park Formation Juvenile individual of Gorgosaurus libratus that preyed upon, dismembered, and consumed two yearling individuals of Citipes elegans. Tyrannosaurus rex? Dueling Dinosaurs (Bloody Mary) Not given North Carolina Museum of Natural Sciences Maastrichtian Hell Creek Formation Individual of a juvenile tyrannosaurid (suggested to be Tyrannosaurus) locked in (apparent) combat with Triceratops.

Ceratopsians Ceratopsids Taxon Nickname Catalogue number Institution Age Unit Country Description Images Triceratops horridus Dueling Dinosaurs Not given North Carolina Museum of Natural Sciences Maastrichtian Hell Creek Formation Individual of Triceratops locked in (apparent) combat with a juvenile tyrannosaurid (suggested to be Tyrannosaurus).

Protoceratopsids Taxon Nickname Catalogue number Institution Age Unit Country Description Images Protoceratops andrewsi Fighting Dinosaurs MPC-D 100/512 Mongolian Palaeontological Center Campanian Djadokhta Formation Individual of Protoceratops andrewsi locked in catastrophic combat with Velociraptor mongoliensis.

Psittacosaurids Taxon Nickname Catalogue number Institution Age Unit Country Description Images Psittacosaurus lujiatunensis Not given WZSSM VF000011 Weihai Ziguang Shi Yan School Museum Aptian Yixian Formation Individual of Psittacosaurus lujiatunensis locked in catastrophic combat with Repenomamus robustus. Supplemental Material Psittacosaurus sp. Not given SMF R 4970 Senckenberg Museum Aptian Yixian Formation Exceptionally preserved individual of Psittacosaurus whose right arm was possibly scavenged by Tianyulong.

Ornithopods Hadrosaurids Taxon Nickname Catalogue number Institution Age Unit Country Description Images Edmontosaurus sp. Dakota mummy NDGS 2000 North Dakota Geological Survey Maastrichtian Hell Creek Formation Individual preserved with extreme detail that bears numerous feeding traces left by scavenging vertebrates. Hadrosauridae indet. Not given TMP 2018.012.0123 Royal Tyrrell Museum of Palaeontology Campanian Dinosaur Park Formation Pedal ungual preserving gnawing-like biting traces left by a dromaeosaurid or very young tyrannosaurid. Saurolophus angustirostris Not given MPC-D 100/764 Mongolian Palaeontological Center Campanian Nemegt Formation Deceased individual of Saurolophus angustirostris that was fed upon by Tarbosaurus bataar.

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