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.

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.

Alcmonavis was formally named in 2019 by O. W. M. Rauhut and colleagues.

It lived in the Late Jurassic (Tithonian), roughly 149.2 to 143.1 million years ago. Finds come from Germany, including the Mörnsheim Formation. It walked on two legs. Its diet is too uncertain to state.

In 2016, P. M. Galton and K. Carpenter published the name Alcovasaurus. The name honors a person tied to the fossil or its study.

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 four legs.

In 1877, O. C. Marsh published the name Allosaurus. The name means “different lizard.”

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 carnivore 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.

Amanzia was formally named in 2020 by D. Schwarz and colleagues. The name honors a person tied to the fossil or its study.

It lived in the Late Jurassic (Kimmeridgian), roughly 154.8 to 149.2 million years ago. Finds come from Switzerland, including the Reuchenette Formation. It was a herbivore and walked on four 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.

Amphicoelias was formally named in 1877 by E. D. Cope. The name means “on both sides.”

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 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.

Apatodon was formally named in 1877 by O. C. Marsh.

Fossils referred to Apatodon date to the Late Jurassic, within an age that is only broadly constrained. Finds come from the United States.

In 1877, O. C. Marsh published the name Apatosaurus. The name means “deceptive lizard.”

Fossils referred to Apatosaurus date to 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 four legs.

Aragosaurus was formally named in 1987 by J. L. Sanz and colleagues. The name means “aragon lizard.”

It lived in the Late Jurassic · Early Cretaceous (Tithonian · Berriasian), roughly 149.2 to 137.1 million years ago. Finds come from Spain, including the Villar del Arzobispo Formation. It was a herbivore and walked on four legs.

The genus Archaeopteryx dates to 1861, the year H. V. Meyer described it. The name means “ancient wing.”

It lived in the Late Jurassic (Tithonian), roughly 149.2 to 143.1 million years ago. Finds come from Germany, including the Altmühltal Formation. It was an insectivore and walked on two legs.

In 2024, T. T. P. van der Linden and colleagues published the name Ardetosaurus. The name means “to burn.”

Fossils referred to Ardetosaurus date to 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 four legs.

Athenar was formally named in 2025 by J. A. Whitlock and colleagues. The name honors a person tied to the fossil or its study.

It lived in the Late Jurassic (Tithonian), roughly 149.2 to 143.1 million years ago. Finds come from the United States, including the Morrison Formation. It was a herbivore and walked on four legs.

The genus Atlantosaurus dates to 1877, the year O. C. Marsh described it.

Fossils referred to Atlantosaurus date to the Late Jurassic, within an age that is only broadly constrained. Finds come from the United States, including the Morrison Formation. It was a herbivore. A habitual gait is not settled.

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.

The genus Australodocus dates to 2007, the year K. Remes described it. The name means “southern beam.”

It lived in the Late Jurassic (Tithonian), roughly 149.2 to 143.1 million years ago. Finds come from Tanzania, including the Tendaguru Formation. It was a herbivore and walked on four legs.

Aviatyrannis was formally named in 2003 by O. W. M. Rauhut. The name means “the tyrant.”

It lived in the Late Jurassic (Oxfordian · Kimmeridgian · Tithonian), roughly 161.5 to 143.1 million years ago. Finds come from Portugal, including the Alcobaça Formation. It was a carnivore and walked on two legs.

The genus Barosaurus dates to 1890, the year O. C. Marsh 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 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.

Bicharracosaurus was formally named in 2026 by A. Reutter and colleagues.

It lived in the Late Jurassic (Oxfordian · Kimmeridgian), roughly 161.5 to 149.2 million years ago. Finds come from Argentina, including the Cañadón Calcáreo Formation. It was a herbivore and walked on four legs.