ECU Libraries Catalog
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Era
- Cretaceous284
- 20th century215
- Tertiary191
- Quaternary176
- 19th century158
- Paleozoic149
- Precambrian143
- Devonian132
- Cenozoic126
- Pleistocene115
- Miocene110
- Eocene108
- Mesozoic101
- Ordovician101
- Permian97
- Pennsylvanian96
- Mississippian87
- 18th century85
- Triassic77
- Jurassic72