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Hello, I have many crinoid columnals that I collected in gravel (I suppose it was river/creek gravel collected and sold by a "sand and gravel" company) in Illinois many years ago. I have two questions that may be obvious to more seasoned fossil hunters/students. 1) Exactly how did the crinoids actually grow, meaning, how did the stems' diameter expand horizontally in size as time went on, since the stems were mostly composed of hard calcium carbonate/lime. In other words, it seems that once they are "hardened" or "frozen" into a certain size, how can they get bigger? Was the
I recently went for a visit to the Cleveland Museum of Natural History (after a great Indians game) and thought I would share with you the renovations that are going on right now. As a Cleveland native, it is very exiting to see the museum grow and it will certainly be great when completed. It is getting ever closer since its announcement- the Perkins Wildlife Center has been complete for some time. Hopefully some of you will get the chance to come visit when complete, its truly a great museum! https://www.cleveland.com/architecture/index.ssf/2015/02/first_look_cleveland_museum_of