# Diapsid

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

**Wikidata**: [Q134688](https://www.wikidata.org/wiki/Q134688)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Diapsid)  
**Source**: https://4ort.xyz/entity/diapsid


## References

1. Fossilworks
2. Freebase Data Dumps. 2013
3. Integrated Taxonomic Information System
4. Encyclopedia of Life
5. KBpedia
6. GF WordNet