Rockford Fossil Collection

Earth Science

What I Found

Crinoids

I often came across the common little left behind from them but then I found 2 massive full crinoid stalks

Brachiopods

These must have been a very successful species because the took up the bulk of what I found and left me tossing them whenever I found them

Gastropods

I found a pretty decent amount of them including an odd looking small one

Bryozoans

I found on and then small little traces in the dirt when going through them all

What I Learned

I always thought that Iowa was always landlocked but after learning what lived here in the devonian era taught me that Iowa was once in a shallow ocean that housed semi complex life such as crinoids gastropods cephalopods and bryozoans just to name a few. And these creatures were so successful that they left a mark for 60 million years.

Resouces

pg.26

pg.28

Rockford Trip Finding Fossils And The Soil