Transit and transportation planning, construction and operations must take into account numerous interdisciplinary fields.

These include urban planning, geology, law, sociology, demographics, engineering, hydrology, sustainability, cartography, history and other disciplines.

Metro’s Library & Archive collects, preserves and provides access to a wealth of information related to these subjects. Perhaps surprising to some, paleontology also intersects with transit.

Local subway tunneling has yielded a wealth of fossils which have shed light on prehistoric Los Angeles.

Mastodons on the Red Line?

The Library’s Primary Resources Blog takes a closer look at the fossils found through subway construction and how they give us a better idea of what L.A. looked like millions of years ago

Check it out here.