>>11482168
Every time you see a '''bat'' it's an anurognathus but we see one fully when Duncan finds the stairs during the Quetz scene.
the Dunk head is explained by this anon >>11482171
the unnamed temnospondyl is in two scenes, one when the family is preparing to sleep at night fall on the first night (it's just chilling on a rock) and again in a tree when the family is on the raft after escaping the Tyrannosaurus again in the evening.
the eel/snake thing in the water really has nothing to identify it and so I didn't bother including it.