Petrolacosaurus ( Lat. Petrolacosaurus kansensis ) is a type of extinct reptiles that lived during the Carboniferous ( 305.9—303.4 million years ago) on the territory of modern Kansas ( USA ) [1] .
| † petrolacosaurus |
Reconstruction |
| Scientific classification |
|---|
| No rank : | Bilateral symmetric |
| Family: | † Petrolacosauridae Peabody, 1952 |
| Rod: | † Petrolacosaurus Lane, 1945 |
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| International Scientific Name |
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Petrolacosaurus kansensis
Peabody, 1952 |
Geochronology305.9—303.4 million years | million years | Period | Era | Eon |
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| 2.588 | Even | | | Ka | F
but
n
e
R
about
s
about
th | | 23.03 | Neogene | | 66.0 | Paleogene | | 145.5 | a piece of chalk | M
e
s
about
s
about
th | | 199.6 | Yura | | 251 | Triassic | | 299 | Permian | P
but
l
e
about
s
about
th | | 359.2 | Carbon | | 416 | Devonian | | 443.7 | Silur | | 488.3 | Ordovician | | 542 | Cambrian | | 4570 | Precambrian |
◄ Nowadays◄ Cretaceous-Paleogene extinction◄ Triassic extinction◄ Perm mass extinction◄ Devonian extinction◄ Ordovician-Silurian extinction◄ Cambrian explosion |
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The length of this lizard-like animal is 40 cm. The head is large and short. The tail is not very long, and the legs are long. Insectoid. Had teeth of 2 types - small sharp and enlarged canine-shaped.
Petrolacosaurus is represented in the TV series " Walking with Monsters " as the ancestor of edaphosaurus . In fact, petrolacosaurus was diapside, that is, it could not be ancestral to synapsids.
