1) Transitional fossil
Found on
https://www.crosswordclues.com/clue/vieraella
Vieraella is an extinct genus of frog from the Jurassic period of Argentina, and the oldest true frog known. Despite living around 200 million years ago, Vieraella was anatomically very similar to modern frogs. For example, its hind legs were adapted for jumping, and the skull already possessed the lattice-like form found in modern species. It was...
Found on
http://en.wikipedia.org/wiki/Vieraella
Vieraella herbsti is the earliest-known true frog. It lived during the Early Jurassic period , about 188-213 million years ago. Vieraella was about 1 inch (3 cm) long. It was very similar to modern-day frogs, including its long, powerful hind legs, very short backbone, a fork-shaped hip girdle, and latticework skull. Fossils of Vieraella have been ...
Found on
http://www.enchantedlearning.com/subjects/dinosaurs/glossary/
No exact match found.
