ECU Libraries Catalog
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Era
- Cretaceous284
- 20th century216
- Tertiary192
- Quaternary177
- 19th century163
- Paleozoic149
- Precambrian143
- Devonian132
- Cenozoic126
- Pleistocene116
- Miocene110
- Eocene108
- Mesozoic102
- Ordovician101
- Permian97
- Pennsylvanian96
- 18th century90
- Mississippian88
- Triassic77
- Jurassic72