Is Petrolacosaurus a reptile?
Is Petrolacosaurus a reptile?
Petrolacosaurus (“rock lake lizard”) is an extinct genus of diapsid reptile from the late Carboniferous period. It was a small, 40-centimetre (16 in) long reptile, and the earliest known reptile with two temporal fenestrae (holes at the rear part of the skull).
What kind of teeth did Petrolacosaurus have?
Petrolacosaurus teeth were of moderate length, slightly recurved, and possessed no lateral compression. Located on the premaxilla of the upper jaw are two teeth, reminiscent of fangs. On the dentary were around 25 smaller teeth, all of different lengths.
What are some interesting facts about the planet Jupiter?
Jupiter Facts. The planet Jupiter is the fifth planet out from the Sun, and is two and a half times more massive than all the other planets in the solar system combined. It is made primarily of gases and is therefore known as a “gas giant”.
Is Petrolacosaurus the ancestor of neodiapsids?
The fact that Petrolacosaurus has features that are distinctly similar to other romeriidans and others which were very primitive, leads scientists to believe that the species is old enough to be an ancestor of neodiapsids.
