Look up a dinosaur

In 1989, H. Ouyang published the name Abrosaurus.

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 four legs.

Adratiklit was formally named in 2020 by S. C. R. Maidment and colleagues. The name means “mountain lizard.”

It lived in the Middle Jurassic (Bathonian · Callovian), roughly 168.2 to 161.5 million years ago. Finds come from Morocco, including the El Mers III Formation. It was a herbivore and walked on four legs.

In 1994, P. C. Sereno and colleagues published the name Afrovenator. The name means “african hunter.”

It lived in the Middle Jurassic (Bathonian · Callovian), roughly 168.2 to 161.5 million years ago. Finds come from Niger, including the Tiourarén Formation. It was a carnivore 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.

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 2024, O. W. M. Rauhut and colleagues published the name Alpkarakush. The name honors a person tied to the fossil or its study.

It lived in the Middle Jurassic (Callovian), roughly 165.3 to 161.5 million years ago. Finds come from Kyrgyzstan, including the Balabansai Formation. It was a carnivore and walked on two legs.

Ambopteryx was formally named in 2019 by M. Wang and colleagues. The name means “both wing.”

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

Analong was formally named in 2020 by X. X. Ren and colleagues. The name honors a person tied to the fossil or its study.

Fossils referred to Analong date to the Middle Jurassic (Bajocian), roughly 170.9 to 168.2 million years ago. Finds come from China, including the Chuanjie Formation. It was a herbivore and walked on four legs.

Anchiornis was formally named in 2009 by X. Xu and colleagues. The name means “near bird.”

Fossils referred to Anchiornis date to the Middle Jurassic · Late Jurassic (Callovian · Oxfordian · Kimmeridgian), roughly 165.3 to 149.2 million years ago. Finds come from China, including the Tiaojishan Formation. It was a carnivore and walked on two legs.

In 2020, X. X. Ren and colleagues published the name Anhuilong. The name means “anhui dragon.”

It lived in the Middle Jurassic (Aalenian–Callovian), roughly 174.7 to 161.5 million years ago. Finds come from China, including the Hongqin Formation. It was a herbivore and walked on four legs.

In 2013, J. N. Choiniere and colleagues published the name Aorun. The name honors a person tied to the fossil or its study.

It lived in the Middle Jurassic (Callovian), roughly 165.3 to 161.5 million years ago. Finds come from China, including the Shishugou Formation. It was a carnivore and walked on two legs.

The genus Archaeodontosaurus dates to 2005, the year E. Buffetaut described it. The name means “ancient-toothed lizard.”

Fossils referred to Archaeodontosaurus date to the Middle Jurassic (Bathonian), roughly 168.2 to 165.3 million years ago. Finds come from Madagascar, including the Isalo IIIb Formation. It was a herbivore and walked on four legs.

Asfaltovenator was formally named in 2019 by O. W. M. Rauhut and D. Pol. The name means “cañadón Asfalto Formation hunter.”

It lived in the Early Jurassic · Middle Jurassic (Toarcian · Aalenian · Bajocian), roughly 184.2 to 168.2 million years ago. Finds come from Argentina, including the Cañadón Asfalto Formation. It was a carnivore and walked on two legs.

Atlasaurus was formally named in 1999 by M. Monbaron and colleagues. The name honors a person tied to the fossil or its study.

It lived in the Middle Jurassic (Bathonian), roughly 168.2 to 165.3 million years ago. Finds come from Morocco, including the Grès des Guettioua Formation. It was a herbivore and walked on four legs.

In 2013, P. Godefroit and colleagues published the name Aurornis. The name means “dawn bird.”

It lived in the Middle Jurassic · Late Jurassic (Callovian · Oxfordian · Kimmeridgian), roughly 165.3 to 149.2 million years ago. Finds come from China, including the Tiaojishan Formation. It was a carnivore and walked on two legs.

Baiyinosaurus was formally named in 2024 by L. Ning and colleagues. The name means “baiyin reptile.”

Fossils referred to Baiyinosaurus date to the Middle Jurassic (Bathonian), roughly 168.2 to 165.3 million years ago. Finds come from China, including the Wangjiashan Formation. It was a herbivore and walked on four legs.

The genus Bashanosaurus dates to 2021, the year D. Hui and colleagues described it. The name means “bashan 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 four legs.

The genus Bellusaurus dates to 1990, the year Z. Dong described it. The name means “beautiful lizard.”

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

The genus Callovosaurus dates to 1980, the year P. M. Galton described it. The name means “callovian lizard.”

It lived in the Middle Jurassic (Callovian), roughly 165.3 to 161.5 million years ago. Finds come from the United Kingdom, including the Oxford Clay Formation. It was a herbivore and walked on two legs.

The genus Cardiodon dates to 1841, the year R. Owen described it.

It lived in the Middle Jurassic (Bathonian), roughly 168.2 to 165.3 million years ago. Finds come from the United Kingdom, including the Forest Marble Formation. It was a herbivore. A habitual gait is not settled.

The genus Ceratocaudia dates to 2026, the year A. Natarajan and colleagues described it.

It lived in the Early Jurassic · Middle Jurassic (Toarcian · Aalenian · Bajocian), roughly 184.2 to 168.2 million years ago. Finds come from India, including the Kaladongar Formation. It walked on four legs. Its diet is too uncertain to state.

Cetiosauriscus was formally named in 1927 by F. V. Huene. The name means “resembling Cetiosaurus.”

Fossils referred to Cetiosauriscus date to the Middle Jurassic (Callovian), roughly 165.3 to 161.5 million years ago. Finds come from the United Kingdom, including the Oxford Clay Formation. It was a herbivore and walked on four legs.

The genus Cetiosaurus dates to 1841, the year R. Owen described it. The name means “whale lizard.”

It lived in the Middle Jurassic (Bajocian · Bathonian), roughly 170.9 to 165.3 million years ago. Finds come from the United Kingdom, including the Forest Marble Formation. It was a herbivore and walked on four legs.

Chebsaurus was formally named in 2005 by F. Mahammed and colleagues. The name means “young man.”

It lived in the Middle Jurassic · Late Jurassic (Callovian · Oxfordian · Kimmeridgian), roughly 165.3 to 149.2 million years ago. Finds come from DZ, including the Aïssa Formation. It was a herbivore and walked on four legs.