Illustrations of the teeth by Leidy and O. C. Marsh, 4: A. mirandus 5: "A." amplus 6: "A." cristatus
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Dinosauria
Clade:
Saurischia
Clade:
Theropoda
Clade:
†Eutyrannosauria
Family:
†Tyrannosauridae
Subfamily:
†Aublysodontinae Nopcsa, 1928 nomen dubium
Genus:
†Aublysodon Leidy, 1868 nomen dubium
Type species
†Aublysodon mirandus
Leidy, 1868
Species
†A. mirandus Leidy, 1868 nomen dubium
and see text
Synonyms
Ornithomimus mirandus (Leidy, 1868) Hay, 1930
Aublysodon (“backwards-flowing tooth") is a genus of carnivorous dinosaurs known only from the Judith River Formation in Montana, which has been dated to the late Campanian age of the late Cretaceous period (about 75 million years ago). The only currently recognized species, Aublysodon mirandus, was named by paleontologist Joseph Leidy in 1868. It is sometimes considered dubious now, because the type specimen consists only of an isolated premaxillary (front) tooth. Although this specimen is now lost, similar teeth have been found in many US states, western Canada, and Asia.[1] These teeth almost certainly belong to juvenile tyrannosaurine tyrannosaurids, but most have not been identified to species level. However, it is likely that the type tooth (and therefore the name Aublysodon mirandus itself) belongs to one of the species in the genus Daspletosaurus, which was present in contemporary formations, and which matches specific details of the original tooth.[2] The synapomorphies alleged to distinguish the Aublysodontinae, especially lack of serrations on premaxillary teeth could have been caused by tooth wear in life, postmortem abrasion, or digestion.[3] Most other "aublysodontine"-type teeth may be from ontogenetic stages or sexual morphs of other tyrannosaurids.[3]
Apart from the type species Aublysodon mirandus over the years several other species have been named. These are now all considered either dubious or identical to other species or as having no close connection to A. mirandus.
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Aublysodon (“backwards-flowing tooth") is a genus of carnivorous dinosaurs known only from the Judith River Formation in Montana, which has been dated...
formations as T. rex were originally classified as separate taxa, including Aublysodon and Albertosaurus megagracilis, the latter being named Dinotyrannus megagracilis...
Dromaeosaurus (/ˌdroʊmiəˈsɔːrəs, -mi.oʊ-/; lit. 'running lizard') is a genus of dromaeosaurid theropod dinosaur that lived during the Late Cretaceous period...
The teeth of Deinodon were slightly heterodont, and the holotype of Aublysodon can probably be assigned to Deinodon. It is likely that the fossilized...
a partial skull and skeleton, were described in 1990 as a specimen of Aublysodon. Additional remains, consisting of the incomplete skull and skeleton of...
Alectrosaurus, Aublysodon or Nanotyrannus. However, Nanotyrannus is often considered to be a juvenile Tyrannosaurus rex, while Aublysodon is usually regarded...
Shanshanosaurus as a tyrannosaurid in 1988, referring it to the now-defunct genus Aublysodon. Dong and Currie later re-examined the specimen and deemed it to be a...
family Deinodontidae. 1868 Leidy described the new genus and species Aublysodon mirandus. Leidy described the new genus Diplotomodon for the species Tomodon...
Formation Genus Species Location Stratigraphic position Material Notes Images Aublysodon A. lateralis "Isolated teeth," type specimen Junior synonym of Deinodon...
Ornithomimus samueli, respectively. The very same year, Oliver Perry Hay renamed Aublysodon mirandus (Leidy 1868) into Ornithomimus mirandus, which is today seen...
Genus Species Location Stratigraphic position Abundance Notes Images Aublysodon A. mirandus Later found to be indeterminate tyrannosauroid remains. Ornithomimus...
reported from New Mexico in 1990 and assigned to the now-defunct genus Aublysodon. Many later authors have reassigned this specimen, along with a few others...
Formation Genus Species Location Stratigraphic Position Material Notes Images Aublysodon A. amplus Teeth, type specimen Dubious tyrannosaurids probably synonymous...
Maastrichtian) Canada ( Alberta) Had a short, deep snout with enlarged teeth Aublysodon 1868 Judith River Formation (Late Cretaceous, Campanian) United States...
Park Formation's tyrannosaurids, like Gorgosaurus, Daspletosaurus, or Aublysodon. Jacobsen determined that all of the marks on the jawbone were left by...
Specimens actually from the Naashoibito member of the Ojo Alamo Formation Aublysodon A. mirandus Hunter Wash Remains are now referred to Bistahieversor, although...
Laelaps species being moved to other theropod dinosaurs like Deinodon, Aublysodon, and Dromaeosaurus. Z. abradens was moved to Dromaeosaurus and synonymized...
These include fossils of large, carnivorous tyrannosaurid theropods like Aublysodon and Deinodon and the small Dromaeosaur Zapsalis. As for the herbivorous...
the formation's tyrannosaurids, like Gorgosaurus, Daspletosaurus, or Aublysodon. All of the marks on the jawbone seem to have been left by the same animal...
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