The science and technology publication American Scientist wrote about the "record-breaking, 10-inch-long whopper of a bullfrog tadpole" in 2018, noting that it was discovered by a "a crew of ...

An American bullfrog tadpole, left, is bigger than the young native northwestern pond turtle in this photo. Bullfrogs often prey on native turtles in the western U.S., contributing to their decline.

Instead, N. degiustoi was big throughout its life, much like the modern American bullfrog (Lithobates catesbeianus). The fossil tadpole also appears to have fed like modern tadpoles do ...

In other words, adult turtles that can’t fit in the frog’s mouth. An American bullfrog tadpole (left) is bigger than the young native northwestern pond turtle on the right of this photo.

More than 16,000 American bullfrogs, larvae and egg masses were removed from Yosemite National Park over a six-year period.

The bullfrogs prey on the turtle's young, as well as newts, salamanders, and other smaller frogs— a cold-blooded killer in the literal sense.

With one 30-yard sweep of their bag seine, Earl Radonski and Brad Olszewski captured about 1,000 American bullfrog tadpoles from a side channel of the Yellowstone River at Two Moon Park on Thursday.

An American bullfrog tadpole, left, is bigger than the young native northwestern pond turtle in this photo. Bullfrogs often prey on native turtles in the western U.S., contributing to their decline.

The science and technology publication American Scientist wrote about the "record-breaking, 10-inch-long whopper of a bullfrog tadpole" in 2018, noting that it was discovered by a "a crew of ...