They are skittish but not anywhere near faster than humans. They have low torpor and health, so tranq darts are recommended. Tamed like any carnivore, kibble is Archeopteryx. Can be found anywhere in and around the swamps.
Can ride but only underwater. In order to ride, hold whatever your ride button is and click the option that says ride. Level up in oxygen, health, and movement speed if using this for underwater dives. Really fast underwater, and can outspeed megalodons.
Fantastic utility Dino. You take oxygen from it passively while riding. The oxygen lasts a long time too; this combined with its speed means you can explore anywhere under water. That and it's a chitin machine ;)
Level oxygen, movement speed and health, tame a higher level so you don't have to pump most of your levels into health, at first it may look like you can't ride it because it doesn't have the option or of the water, but once you get in the water, you can suck oxygen out of it so if your playing on primitive plus or don't have scuba yet it's very good
Use spyglass to find diplocaulus
The oxygen info is white and stands out against normal yellow green and red and is larger font...
There are very week Dino so kill everything that breaths on it, around it
Since they are often being killed by the other local fauna in their habitat, but can be picked up by a pteranodon, my strategy is to patrol until you find one, pick it up and carry it to a safe taming area. Just keep Kaprosuchus in mind while following tthis idea since they can grab you off of your bird...