What are the skeletal features of Dinosaurs and Archaeopteryx?
- Elaine MLv 71 year ago
- Anonymous1 year ago
Archaeopteryx is a primitie bird. Birds are descendants of archosaurian reptiles, and dinosaurs are archosaurian reptiles, so they share features in common such as a diapsid skull (with 2 temporal openings) and both have a mandibular fenestra (hole in the lower jaw bone). There is also an additional opening in the skull, in front of the eye socket, known as the antorbital fenestra. This hole is not found in other reptiles, such as lizards, snakes, turtles, but are found in birds, crocodilians (at least in their ancestors) and dinosaurs.
Both birds and dinosaurs have a hole in their pelvis that allows the leg bone to articulate with the pelvis.