Unidentified time-travelling species (The Transformers)

An unknown species of time travelers, were encountered by a group of Dinobots in a cave under what would someday be Disneyland.

Biology
The species have bodies similar to Earth potatoes, with two digitigrade legs with webbed feet, implying the species is amphibious in nature. They have two small arms and what looks like seven eyes.

Technology
The species are spacefaring as they do have Flying Saucers and they also have access to time travel.

History
The first and only time this species has been encountered was by a group of Cybertronians in a cave four million years in the past, under what would later become Disneyland.