Stroinolepis
Encyclopedia
Stroinolepis is a genus of thelodonti
d that lived during the Middle Ordovician
period in what is now Russia
.
Thelodonti
Thelodonts are a group of small, extinct jawless fishes with distinctive scales instead of large plates of armor....
d that lived during the Middle Ordovician
Ordovician
The Ordovician is a geologic period and system, the second of six of the Paleozoic Era, and covers the time between 488.3±1.7 to 443.7±1.5 million years ago . It follows the Cambrian Period and is followed by the Silurian Period...
period in what is now Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...
.