July 24, 2019
Did you know the limestone that goes into many Iowa roadways is full of prehistoric creatures? Throughout millions of years of geologic history, when present-day Iowa was covered by oceans, sea creatures were everywhere. Fossilized fragments of sea creatures were left behind in the rocks that were deposited by these oceans.
One of most prominent groups of fossils are the crinoids. Also referred to as sea lilies, researchers say the fossils have survived about 500 million years of Earth history and crinoid skeletal fragments make up a significant portion of Iowa's limestone deposits. This limestone is used for road base, as agricultural lime, as building stone, and as a component in concrete.
With some exceptions, Iowa law requires all children under age 18 to be in an appropriate car seat, booster, or seat belt, no matter where they are seated in the vehicle. Unfortunately, adults over the age of 18 are only required to buckle in the front seat.
Even though it’s not mandatory in Iowa law, having every person in your vehicle securely buckled up can reduce serious injuries and save lives in a crash. In Iowa, data from the last 10 years show that unbuckled, adult passengers in the back seat are three times as likely to be killed in a crash compared to those who are belted.