FLEXICALYMENE trilobites are well known in the area around southern Ohio, Indiana and Kentucky. The Trilobites had the ability to roll up (enroll) for protection from danger. Finding extremely small enrolled trilobite is very rare. Most people overlook them when hunting fossils. Here you have a growth series of flexi’s from very small to a mid size. Large flexi’s are also fairly rare.
This is a wonderful representation of the growth of these fascinating creaturs.