Crinoid Stem Fossils at Metropolitan Museum of Art

While visiting New York City's Metropolitan Museum of Art located at 1000 Fifth Avenue and 82nd Street, I came across a number of crinoid stem fossils. They were embedded in the railing stone of a balcony on the 2nd level overlooking the Arms and Armory large room on the 1st level.

It is difficult to tell what age the fossils are from or location of where the stone was from. There are a lot of small crinoid stem pieces in the stone and maybe some other types of fossils.