Look up a dinosaur

In 1975, J. A. Hopson published the name Abrictosaurus. The name means “wakeful lizard.”

It lived in the Early Jurassic (Hettangian · Sinemurian), roughly 201.4 to 192.9 million years ago. Finds come from Lesotho, including the Elliot Formation. It was a herbivore and walked on two legs.

The genus Agilisaurus dates to 1992, the year G. Peng described it. The name means “agile lizard.”

It lived in the Middle Jurassic · Late Jurassic (Bajocian–Oxfordian), roughly 170.9 to 154.8 million years ago. Finds come from China, including the Shaximiao Formation. It was a herbivore and walked on two legs.

The genus Albalophosaurus dates to 2009, the year T. Ohashi and P. M. Barrett described it.

It lived in the Early Cretaceous (Barremian), roughly 125.8 to 121.4 million years ago. Finds come from Japan, including the Kuwajima Formation. It was a herbivore and walked on two legs.

The genus Albertadromeus dates to 2013, the year C. M. Brown and colleagues described it. The name means “runner from Alberta.”

Fossils referred to Albertadromeus date to the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from Canada, including the Oldman Formation. It was a herbivore and walked on two legs.

Alocodon was formally named in 1973 by R. A. Thulborn. The name means “furrow tooth.”

It lived in the Middle Jurassic · Late Jurassic (Callovian · Oxfordian), roughly 165.3 to 154.8 million years ago. Finds come from Portugal, including the Cabaços Formation. It was a herbivore and walked on two legs.

In 1978, S. M. Kurzanov and T. A. Tumanova published the name Amtosaurus. The name honors a person tied to the fossil or its study.

Fossils referred to Amtosaurus date to the Late Cretaceous (Cenomanian · Turonian), roughly 100.5 to 89.8 million years ago. Finds come from Mongolia, including the Bayanshiree Formation. It was a herbivore and walked on four legs.

The genus Archaeocursor dates to 2025, the year X. Yao and colleagues described it. The name means “old runner.”

It lived in the Early Jurassic (Sinemurian · Pliensbachian), roughly 199.5 to 184.2 million years ago. Finds come from China, including the Ziliujing Formation. It was a herbivore and walked on two legs.

The genus Bienosaurus dates to 2001, the year Z. Dong described it. The name honors a person tied to the fossil or its study.

Fossils referred to Bienosaurus date to the Early Jurassic (Hettangian · Sinemurian), roughly 201.4 to 192.9 million years ago. Finds come from China, including the Lufeng Formation. It was a herbivore. A habitual gait is not settled.

The genus Brachypodosaurus dates to 1934, the year D. K. Chakravarti described it. The name means “short-footed lizard.”

Fossils referred to Brachypodosaurus date to the Late Cretaceous (Maastrichtian), roughly 72.2 to 66 million years ago. Finds come from India, including the Lameta Formation. It was a herbivore. A habitual gait is not settled.

Changchunsaurus was formally named in 2005 by S. Q. Zan and colleagues. The name means “changchun lizard.”

Fossils referred to Changchunsaurus date to the Early Cretaceous (Aptian · Albian), roughly 121.4 to 100.5 million years ago. Finds come from China, including the Quantou Formation. It was a herbivore and walked on two legs.

The genus Claorhynchus dates to 1892, the year E. D. Cope described it.

It lived in the Late Cretaceous, within an age that is only broadly constrained. Finds come from the United States. It was a herbivore. A habitual gait is not settled.

The genus Doolysaurus dates to 2026, the year J. Jung and colleagues described it. The name honors a person tied to the fossil or its study.

Fossils referred to Doolysaurus date to the Late Cretaceous (Cenomanian), roughly 100.5 to 93.9 million years ago. Finds come from South Korea, including the Ilseongsan Formation. It was a herbivore and walked on two legs.

The genus Echinodon dates to 1861, the year R. Owen described it. The name means “prickly tooth.”

It lived in the Early Cretaceous (Berriasian), roughly 143.1 to 137.1 million years ago. Finds come from the United Kingdom, including the Lulworth Formation. It was a herbivore and walked on two legs.

In 1990, H. Haubold published the name Emausaurus. The name means “eMAU lizard.”

It lived in the Early Jurassic (Toarcian), roughly 184.2 to 174.7 million years ago. Finds come from Germany, including the Posidonia Shale Formation. It was a herbivore and walked on four legs.

The genus Enigmacursor dates to 2025, the year S. C. R. Maidment and P. M. Barrett described it.

It lived in the Late Jurassic (Kimmeridgian · Tithonian), roughly 154.8 to 143.1 million years ago. Finds come from the United States, including the Morrison Formation. It was a herbivore and walked on two legs.

The genus Eocursor dates to 2007, the year R. J. Butler and colleagues described it.

Fossils referred to Eocursor date to the Early Jurassic (Hettangian · Sinemurian), roughly 201.4 to 192.9 million years ago. Finds come from South Africa, including the Elliot Formation. It was a herbivore and walked on two legs.

The genus Fabrosaurus dates to 1964, the year L. Ginsburg described it. The name honors a person tied to the fossil or its study.

It lived in the Early Jurassic (Hettangian · Sinemurian), roughly 201.4 to 192.9 million years ago. Finds come from Lesotho, including the Elliot Formation. It was a herbivore and walked on two legs.

The genus Ferganocephale dates to 2005, the year A. O. Averianov and colleagues described it. The name means “fergana head.”

Fossils referred to Ferganocephale date to the Middle Jurassic (Callovian), roughly 165.3 to 161.5 million years ago. Finds come from Kyrgyzstan, including the Balabansai Formation. It was a herbivore and walked on two legs.

Fona was formally named in 2024 by H. M. Avrahami and colleagues. The name means “the origin.”

Fossils referred to Fona date to the Late Cretaceous (Cenomanian), roughly 100.5 to 93.9 million years ago. Finds come from the United States, including the Cedar Mountain Formation. It was a herbivore and walked on two legs.

The genus Fruitadens dates to 2010, the year R. J. Butler and colleagues described it.

It lived in the Late Jurassic (Kimmeridgian), roughly 154.8 to 149.2 million years ago. Finds come from the United States, including the Morrison Formation. It was a herbivore and walked on two legs.

The genus Geranosaurus dates to 1911, the year R. Broom described it.

It lived in the Early Jurassic (Sinemurian · Pliensbachian), roughly 199.5 to 184.2 million years ago. Finds come from South Africa, including the Clarens Formation. It was a herbivore and walked on two legs.

The genus Gongbusaurus dates to 1983, the year Z. Dong and colleagues described it. The name honors a person tied to the fossil or its study.

It lived in the Middle Jurassic · Late Jurassic (Bajocian–Oxfordian), roughly 170.9 to 154.8 million years ago. Finds come from China, including the Shaximiao Formation. It was a herbivore and walked on two legs.

In 2011, P. J. Makovicky and colleagues published the name Haya.

It lived in the Late Cretaceous (Santonian · Campanian), roughly 85.7 to 72.2 million years ago. Finds come from Mongolia, including the Javkhlant Formation. It was a herbivore and walked on two legs.

In 1962, A. W. Crompton and A. J. Charig published the name Heterodontosaurus. The name honors a person tied to the fossil or its study.

Fossils referred to Heterodontosaurus date to the Early Jurassic (Sinemurian · Pliensbachian), roughly 199.5 to 184.2 million years ago. Finds come from South Africa, including the Clarens Formation. It was a herbivore and walked on two legs.