ECU Libraries Catalog
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Era
- Cretaceous284
- 20th century216
- Tertiary191
- Quaternary176
- 19th century164
- Paleozoic149
- Precambrian143
- Devonian132
- Cenozoic126
- Pleistocene116
- Miocene109
- Eocene108
- Mesozoic102
- Ordovician101
- Permian97
- Pennsylvanian96
- 18th century91
- Mississippian88
- Triassic77
- Jurassic72