-For the Tortoise, the first stage has an outwards curved tail. The 2nd stage has the tail curving more and it widened a little bit. In the 3rd stage the tail elongates some more. Overall, through the 3 stages the tail gets longer.

-For the Salamander, the first stage is a curved tail. In the second stage, the tail starts to straighten out and in the third stage, it is completely straight. Through the three stages the tail straightens out. 

-The Puijila would have a similar MANX gene compared to the Salamander. This is because the tail, through embryology, straightens out. It would not be similar to the Tortoise’s MANX gene, since the Tortoise tail is not similar to the Puijila tail shape.

The Puijila fossil and the river otter are very closely related. They both have cells with DNA, bilateral symmetry, vertebrates, have warm blood, and webbed digits. The evolutionary tree shows how the puijila and the river otter are very closely related because they are right next to each other.