- Definitions|0
- Thesaurus|20
- Abbreviations|0
7 entries under formation topic. ×
| paleocene geology(expression, geology, geohistory) | |
| cretaceous-paleogene boundary(expression, geology, geohistory) | |
| paleogene geology of north dakota(expression, geohistory, north, dakota) | |
| paleogene geology of south dakota(expression, geology, dakota) | |
| paleogene geology of wyoming(expression, geology, wyoming) | |
| paleogene montana(expression, geohistory, montana) | |
| paleogene system of north america(expression, geohistory, america) |
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| APA | Smart Define. (1970). hell creek formation thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/hell_creek_formation/thesaurus/broader |
| Chicago | Smart Define. 1970. "hell creek formation thesaurus" https://smartdefine.org/hell_creek_formation/thesaurus/broader (accessed September 27, 2026). |
| Harvard | Smart Define 1970, hell creek formation thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/hell_creek_formation/thesaurus/broader>. |
| MLA | Smart Define. "hell creek formation thesaurus" 1 January 1970. Web. 27 September 2026. <https://smartdefine.org/hell_creek_formation/thesaurus/broader> |