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Bathonian
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In the geologic timescale the Bathonian epoch is a stage during the Middle Jurassic, of the Mesozoic era of the Phanerozoic eon. It lasted from approximately 167.7 Ma to around 164.7 Ma (million years ago). The Bathonian age succeeds the Bajocian age and precedes the Callovian age.
The stage takes its name from Bath, a spa town in England built on Jurassic limestone.
le class="wikitable" align="center" width="100%"> | | Ankylosaurs of the Bathonian |
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le class="wikitable" align="center" width="100%">| Crocodylomorphs of the Bathonian |
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le class="wikitable" align="center" width="100%"> | | Ornithopods of the Bathonian |
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le class="wikitable" align="center" width="100%">| Sauropods of the Bathonian |
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le class="wikitable" align="center" width="100%"> | | Stegosaurs of the Bathonian |
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le class="wikitable" align="center" width="100%"> | | theropods of the Bathonian |
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ers of the order ammonitda are known as Ammonitic ammonites.

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Encyclopedia
In the geologic timescale the Bathonian epoch is a stage during the Middle Jurassic, of the Mesozoic era of the Phanerozoic eon. It lasted from approximately 167.7 Ma to around 164.7 Ma (million years ago). The Bathonian age succeeds the Bajocian age and precedes the Callovian age.
The stage takes its name from Bath, a spa town in England built on Jurassic limestone.
Vertebrate Fauna
Ankylosaurs
| Ankylosaurs of the Bathonian |
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| Taxa | Presence | Location | Description | Images |
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- Tianchisaurus nedegoapeferima
| | | A Chinese ankylosaur which lacked a club at the end of its tail. Its species epithet honors the main actors of Jurassic Park. | | |
Crocodylomorphs
| Crocodylomorphs of the Bathonian |
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| Taxa | Presence | Location | Description | Images |
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| | | An opportunistic carnivore that fed on fish, belemnites and other marine animals and possible carrion. Metriorhynchus grew to an average adult length of 3 meters (9.6 ft), although some individuals may have reached lengths rivaling those of large nile crocodiles. | | | Steneosaurus | | | | | Teleosaurus | | | | | Teleidosaurus | | | The most plesiomorphic known metriorhynchid. | |
Ornithopods
| Ornithopods of the Bathonian |
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| Taxa | Presence | Location | Description | Images |
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| | | A four foot long bipedal herbivore that was built for speed. It was discovered in one of China's many Callovian deposits. | |
| Bathonian to Callovian | Lower Shaximiao Formation, Sichuan, China | A small ornithischian dinosaur distinguished from all other basal ornithischians by a single autapomorphy, the presence of a marked concavity that extends over the lateral surface of the postorbital. |
| | | A poorly known Chinese ornithschian that may be related to Hypsilophodon and Lesothosaurus. It was small and vegetarian. |
| | Dashanpu Formation, Sichuan, China | | |
Sauropods
| Sauropods of the Bathonian |
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| Taxa | Presence | Location | Description | Images |
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| | | Abrosaurus was a small (30 foot adult length) sauropod from China with an unusual skull. | | | Atlasaurus | | | A sauropod named after the mountains where the mythological figure that held the world on his shoulders, it attained lengths of 15 meters (50 ft) and lived in Morocco. | | Cardiodon | | | A poorly known English sauropod with heart shaped teeth. | | Shunosaurus | | Lower Shaximiao Formation, Sichuan, China | A 10 metres long, fairly short-necked sauropod with a short deep skull, with fairly robust spatulate teeth. Its tail ended in a club, probably used for fending off enemies. | |
Stegosauria
| Stegosaurs of the Bathonian |
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| Taxa | Presence | Location | Description | Images |
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| Bathonian to Callovian | Lower Shaximiao Formation, Sichuan, China | A 4.5 meters in length quadrupedal herbivore with a small skull and a spiked tail. Bore the distinctive double row of plates, rising vertically along its arched back, of all the stegosaurians and two pairs of long spikes extending horizontally near the end of its tail | | |
Thalattosuchians
| Thalattosuchians of the Bathonian |
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| Taxa | Presence | Location | Description | Images |
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| | | An opportunistic carnivore that fed on fish, belemnites and other marine animals and possible carrion. Metriorhynchus grew to an average adult length of 3 meters (9.6 feet), although some individuals may have reached lengths rivaling those of large nile crocodiles. | | | Teleidosaurus | | | The most plesiomorphic known metriorhynchid. | |
Theropods
Invertebrate Fauna
Ammonitida
Members of the order ammonitda are known as Ammonitic ammonites. They are distinguished primarily by their suture lines. In ammonitic suture patterns, the lobes and saddles are much subdivided (fluted) and subdivisions are usually rounded instead of saw-toothed. Ammonoids of this type are the most important species from a biostratigraphical point of view. This suture type is characteristic of Jurassic and Cretaceous ammonoids but extends back all the way to the Permian.
Belemnites
| Belemnites of the Bathonian |
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