Archaeornithomimus

Archaeornithomimus asiaticusArchaeornithomimus bissektensisOrnithomimus asiaticus
Archaeornithomimus (meaning "ancient bird mimic") is a genus of ornithomimosaurian theropod dinosaur from the Late Cretaceous of China, 70 million years ago.wikipedia
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Charles W. Gilmore

Charles Whitney GilmoreGilmoreCharles Gilmore
These were named and shortly described by Charles Whitney Gilmore in 1933 as a new species of Ornithomimus: Ornithomimus asiaticus.
Gilmore named many dinosaurs in North America and Mongolia, including the Cretaceous sauropod Alamosaurus, Alectrosaurus, Archaeornithomimus, Bactrosaurus, Brachyceratops, Chirostenotes, Mongolosaurus, Parrosaurus, Pinacosaurus, Styracosaurus ovatus (now Rubeosaurus) and Thescelosaurus.

Ornithomimus

Ornithomimus veloxOrnithomimus edmontonicusOrnithomimus tenuis
These were named and shortly described by Charles Whitney Gilmore in 1933 as a new species of Ornithomimus: Ornithomimus asiaticus.
The first was Archaeornithomimus to which Ornithomimus asiaticus and Ornithomimus affinis were assigned, becoming an Archaeornithomimus asiaticus and an Archaeornithomimus affinis.

Iren Dabasu Formation

Iren Dabasu
The fossils were found in the Iren Dabasu Formation, which has been dated to the Campanian-Maastrichtian era.

Ornithomimidae

ornithomimidornithomimidsornithomimid dinosaur
Russell assigned Archaeornithomimus to the Ornithomimidae.

Timeline of ornithomimosaur research

* Timeline of ornithomimosaur research
The first was a bonebed of "Ornithomimus" (now Archaeornithomimus) asiaticus found at Iren Debasu.

Campanian

Late CampanianEarly CampanianCampanian age
The fossils were found in the Iren Dabasu Formation, which has been dated to the Campanian-Maastrichtian era.

Allosaurus

Allosaurus fragilisLabrosaurusCreosaurus
Foot bones found in the Early Cretaceous Arundel Formation of Maryland had been referred by Othniel Charles Marsh to Allosaurus medius.
When the researchers looked for stress fractures, they found that Allosaurus had a significantly greater number of stress fractures than Albertosaurus, Ornithomimus or Archaeornithomimus.

Bissekty Formation

BissektyBissekty ornithomimid
In 1995 a third species of Archaeornithomimus was named by Lev Nesov: Archaeornithomimus bissektensis, based on holotype N 479/12457, a thighbone of a juvenile, found in the Bissekty Formation of Uzbekistan, dating to the Turonian-Coniacian.

Paleozoological Museum of China

Palaeozoological Museum of China
The exhibit then focuses on dinosaurs, installing mounts of Archaeornithomimus, Probactrosaurus, and the designate museum treasure of the IVPP, a Lufengosaurus skeleton that was the first dinosaur fossil found in China.

Stress fracture

hairline fracturestress fracturesstress reaction
In a 2001 study conducted by Bruce Rothschild and other paleontologists, 229 foot bones referred to Archaeornithomimus were examined for signs of stress fracture, but none were found.
After examining the bones of many kinds of dinosaur the researchers noted that Allosaurus had a significantly greater number of bulges on the shafts of its hand and foot bones than the tyrannosaur Albertosaurus, or the ostrich dinosaurs Ornithomimus and Archaeornithomimus.

Genus

generageneric namegeneric
Archaeornithomimus (meaning "ancient bird mimic") is a genus of ornithomimosaurian theropod dinosaur from the Late Cretaceous of China, 70 million years ago.

Ornithomimosauria

ornithomimosaurornithomimosaursArctometatarsalia
Archaeornithomimus (meaning "ancient bird mimic") is a genus of ornithomimosaurian theropod dinosaur from the Late Cretaceous of China, 70 million years ago.

Theropoda

theropodtheropodsTheropoda indet.
Archaeornithomimus (meaning "ancient bird mimic") is a genus of ornithomimosaurian theropod dinosaur from the Late Cretaceous of China, 70 million years ago.

Dinosaur

dinosaursDinosaurianon-avian dinosaurs
Archaeornithomimus (meaning "ancient bird mimic") is a genus of ornithomimosaurian theropod dinosaur from the Late Cretaceous of China, 70 million years ago.

Cretaceous

Cretaceous PeriodMiddle CretaceousEarly Cretaceous
Archaeornithomimus (meaning "ancient bird mimic") is a genus of ornithomimosaurian theropod dinosaur from the Late Cretaceous of China, 70 million years ago.

China

People's Republic of ChinaChineseCHN
Archaeornithomimus (meaning "ancient bird mimic") is a genus of ornithomimosaurian theropod dinosaur from the Late Cretaceous of China, 70 million years ago.

American Museum of Natural History

AMNHMuseum of Natural HistoryThe American Museum of Natural History
In 1923, during the American Museum of Natural History expedition by Roy Chapman Andrews to Inner Mongolia, Peter Kaisen discovered numerous theropod remains in three quarries.

Roy Chapman Andrews

AndrewsAndrews, Roy ChapmanRoy Andrews
In 1923, during the American Museum of Natural History expedition by Roy Chapman Andrews to Inner Mongolia, Peter Kaisen discovered numerous theropod remains in three quarries.

Inner Mongolia

Inner Mongolia Autonomous RegionNei MongolInner
In 1923, during the American Museum of Natural History expedition by Roy Chapman Andrews to Inner Mongolia, Peter Kaisen discovered numerous theropod remains in three quarries.

Specific name (zoology)

specific namespecific epithetspecies name
The specific name refers to the Asian provenance.

Dale Russell

RussellDale A. RussellDale Alan Russell
The species was placed in the new genus Archaeornithomimus by Dale Russell in 1972, making Archaeornithomimus asiaticus the type species of the genus.

Type species

typesingle speciestype specimen
The species was placed in the new genus Archaeornithomimus by Dale Russell in 1972, making Archaeornithomimus asiaticus the type species of the genus.

Cenomanian

Early CenomanianLate CenomanianEarliest Cenomanian
The generic name combines that of Ornithomimus with a Greek ἀρχαῖος (archaios), "ancient", because Russell mistakenly believed that the layers Archaeornithomimus was found in dated to the Cenomanian-Turonian, about 95 million years old, making it one of the oldest ornithomimids known at the time.

Turonian

Early TuronianLate TuronianTuronian age
In 1995 a third species of Archaeornithomimus was named by Lev Nesov: Archaeornithomimus bissektensis, based on holotype N 479/12457, a thighbone of a juvenile, found in the Bissekty Formation of Uzbekistan, dating to the Turonian-Coniacian. The generic name combines that of Ornithomimus with a Greek ἀρχαῖος (archaios), "ancient", because Russell mistakenly believed that the layers Archaeornithomimus was found in dated to the Cenomanian-Turonian, about 95 million years old, making it one of the oldest ornithomimids known at the time.