Sign up for Lesson Plans, discounts & more!

Don't know?

by Patricia
(San Luis, AZ)

crinoid stems

crinoid stems

I was given this by a friend who got it from a friend. I really want to know what it is, can you help me please.

Comments for Don't know?

Click here to add your own comments

Nice collection of crinoid stems
by: Doug


This rock is full of crinoid stems. Crinoids are a living fossil in that they are 100's of millions of years old and there are still crinoids living in the oceans today. See this for more information about crinoids.

The different shapes in the rock are different views of the same thing. The circles are the end view of the stalk or stem. The rectangular shapes are looking along the side of the stem. One of the rectangles is sliced in half and you see the inside of the stem. I can't tell you how old this is because we do not know where it came from. Thanks for your submission.

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to fossil-identification.

Check out some of the Educational Materials for sale on our sister site

Share this page:
Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.

interested in more? If so, you may want to check out our other sites: - Our online fossil and mineral rock shop. - An educational site about rocks, minerals, and geology.