Virtual Tour of the Johnston Geology Museum

STOP 3 Echinoderms - Modern and Fossil

Crinoids are some of the earliest animals observed in the fossil record. Throughout the course of Earth History, they have evolved to adapt to a variety of different climates. This display contains a rare articulated stem; small round segments that look like life savers are more common, and can be found scattered on the ground not far from the museum.

Question 5: Where was the large slab of crinoid stems and calyces in this display found?

Question 6: During what period of geologic time did the animals on this slab live?

Question 7: What is the approximate range in years (beginning to end) of that period? Click here for a Geologic Time Scale