Definition of Natronicus. Meaning of Natronicus. Synonyms of Natronicus

- the Middle Eocene Bridger and Wind River Formations, and the species S. natronicus, named in 1977 from the Lower Oligocene White River Formation. Spathorhynchus...
- †Spathorhynchus fossorium †Spathorhynchus natronicus...
- late Eocene A rare varanid based on jaw fragments. †Spathorhynchus †S. natronicus Chadronian late Eocene A rare rhineurid based on a single skull. †Tinosaurus...
- †Spathorhynchus fossorium – type locality for species †Spathorhynchus natronicus Spermophilus †Spermophilus variegatus †Sphenocoelus Spirodela †Spiza †Spiza...
- †Spathorhynchus fossorium – type locality for species †Spathorhynchus natronicus Spermophilus †Spermophilus primitivus †Spermophilus variegatus †Sphacorhysis...
- †Spathorhynchus natronicus...