- What that is, Dr. Maia?
- I don't know, Luis. I have never seen anything like this before.

6 seconds sound clip from the Creature from the Black Lagoon (1954) movie soundboard.

You can hear this line at 00:02:57.728 in the Blu-ray version of the movie.

Quote context

[...]

- This is the planet Earth, newly born, and cooling rapidly from a temperature of 6000 degrees to a few hundred in less than five billion years.

- The heat rises, meets the atmosphere, the clouds form, and rain pours down upon the hardening surface for countless centuries.

- The restless seas rise, find boundaries, are contained. Now, in their warm depths, the miracle of life begins.

- In infinite variety, living things appear, and change, and reach the land, leaving a record of their coming, of their struggle to survive, and of their eventual end.

- The record of life is written on the land, where 15 million years later, in the upper reaches of the Amazon, man is still trying to read it.

- What that is, Dr. Maia?

- I don't know, Luis. I have never seen anything like this before.

- It's important?

- Yes, I think it is, very important.

- We will take one more picture. Then we will dig it out.

- I'm going to Morajo Bay, to the institute. You two are to wait here in the camp.

- You be gone long?

- Long enough to find out what this is and get help in digging out the rest of the skeleton.

[...]