ECU Libraries Catalog
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Era
- Cretaceous284
- 20th century215
- Tertiary190
- Quaternary175
- 19th century164
- Paleozoic149
- Precambrian143
- Devonian132
- Cenozoic126
- Pleistocene115
- Eocene108
- Miocene108
- Mesozoic101
- Ordovician101
- Permian97
- Pennsylvanian96
- 18th century92
- Mississippian87
- Triassic77
- Jurassic72