# Western Interior Seaway

> large inland sea during the mid- to late Cretaceous and the very early Paleogene; split North America into Laramidia and Appalachia; stretched from the Gulf of Mexico to the Arctic Ocean; at its largest, it was 760 m deep, 970 km wide, 3200 km long

**Wikidata**: [Q1083697](https://www.wikidata.org/wiki/Q1083697)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Western_Interior_Seaway)  
**Source**: https://4ort.xyz/entity/western-interior-seaway


## References

1. Library of Congress
2. Freebase Data Dumps. 2013
3. Quora
4. National Library of Israel Names and Subjects Authority File