# Ichthyopterygia

> superorder of tetrapods that developed two holes (temporal fenestra) in each side of their skulls, about 300 million years ago

**Wikidata**: [Q2583869](https://www.wikidata.org/wiki/Q2583869)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ichthyopterygia)  
**Source**: https://4ort.xyz/entity/ichthyopterygia


## References

1. Freebase Data Dumps. 2013