An engursuchus hunting sky red plakkies.

There are many species of crocodilian-type reptiles living on Tethys. Properly called the tethys Pseudosuchidae, usually shortened to tethysuchidae or just straight called crocodiles.

Tamtusuchus: The largest known crocodilian on Tethys. Tamtus are heavy-set and easily reach lengths of twelve metres and weights of nine tons. They are saltwater and are known to attack sea serpents. They are found up and down the east coast of Ki and in the Sea of Tiamat, though fortunately not often in the bay.

Tamtus are generally what people think of when they think of Tethyn crocodiles. While the prefix 'tamtu' is common on Tethys, used alone it is taken to mean the crocodilian. The entomorph term for them is 'shore beast'.

Engursuchus: Another saltwater crocodilian, engurs are lightly-built and not armoured, trading in strength for speed. Their tails are very broad and flat. They can reach lengths of eight metres. Engurs can function on land if they have to but are generally aquatic.

Nammusuchus: A saltwater crocodilian so adapted to the water that their hind legs have atrophied completely. They live their entire lives out in the open ocean and give birth to live young rather than laying eggs.

Abzusuchus: A freshwater crocodilian preferring large inland lakes and rivers. Abzus don't tend to grow bigger than four metres long.

The entomorph term for them is 'river beast'.

Thalasuchus: An almost entirely terrestrial crocodilian, living on lakeshores or sea coasts, but preferring to stay out of the water. Thalas are lightly built with longer limbs than expected on a crododilian. They average about three metres in length and are often prey for their cousin tamtus and abzus.

Litusuchus: A very small marine species that feeds on tiny reef fish, sand lizards, and exposed toes. They don't tend to grow longer than thirty centimetres.