U Fossilized Dragonfly

Fossils of invertebrates (animals without backbones), particularly insects, are preserved in great detail, such as this Zigoptera dragonfly.

Jaw was long and slim, and although the snout has not been found, it may have had a spoon-shaped tip

Irritator was the first Early Creataceous dinosaur to have been discovered in Brazil. It is known from a nearly complete skull, discovered in the Santana Formation. Its facial features suggest that it was probably a fish-eater.

U ARARIPE TODAY

The greater part of the Araripe Basin lies in the south of the Brazilian state of Ceara. It is an area of fertile soil, where small, thorny trees, cacti, and grasses grow. There are plans to make the area into a National Geopark, which would help to protect the area's environment and its unique fossils.

Jaws were lined with small, sharp teeth

U ARARIPE TODAY

Dragonfly Sharp Teeth

Jaws were lined with small, sharp teeth

Fingers with sharp claws

Fish are the most famous fossils from the Santana Formation. Even their eyes, muscles, and intestines are well preserved, along with their bones

Fingers with sharp claws

Legs are still attached to the thorax (chest region)

Fish are the most famous fossils from the Santana Formation. Even their eyes, muscles, and intestines are well preserved, along with their bones

Santanaraptor is known from a partial skeleton. A small carnivore, it was only about 6K2 ft (2 m) in height, and weighed about 65 lb (30 kg). Impressions of its skin were also found, and holes within its bones reveal the positions of blood vessels.

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