Ivy

Ivy, or "The Tupandactylus", was one of the pterosaurs infected in "The Aviary". She escaped with the other pterosaurs. She broke into the second aviary, and infected everything. In Primal Zombies: Part One, she can be seen flying towards the main facility. She tries to get in, but the door closes just in time. Later, she can be seen watching "Marcus". After that, she breaks out of the second aviary off-screen. Her current location is unknown, since this is the last episode she appeared in.