# Spinoaequalis

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

**Wikidata**: [Q1061943](https://www.wikidata.org/wiki/Q1061943)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Spinoaequalis)  
**Source**: https://4ort.xyz/entity/spinoaequalis


## References

1. Freebase Data Dumps. 2013
2. Fossilworks
3. Global Biodiversity Information Facility
4. Interim Register of Marine and Nonmarine Genera
5. Open Tree of Life reference taxonomy version 3.6