Moving right along this morning, here is a worksheet on the Greek roots pter/o, pteryg, and pteryx. They mean wing and fin. You can probably see pterodactyl arising from these; you’ll have to open the worksheet to see the rest.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.