3.4" Actinocrinites Multiradiatus Crinoid Fossil Mississippian Age Burlington, Iowa Turtle or “stony

or “stony

They were nonetheless capable of rearing onto their hind legs to access elevated vegetation and could sprint bipedally to evade predators

This variability in color is often due to the presence of trace elements within its crystal lattice

walking on two legs

As geological conditions changed and sediments accumulated

3.4" Actinocrinites Multiradiatus Crinoid Fossil Mississippian Age Burlington, Iowa Turtle or “stonyLocation: Burlington Formation, Burlington, Iowa Weight: 10. 7 Ounces Dimensions: 3. 4 Inches Long, 2. 9 Inches Wide, 1. 6 Inches Thick (Plate) Mississippian Age, 323 Million Years Old The Item Pictured is the one you will receive. Actinocrinites Multiradiatus and Uperocrinus Pyriformis Crinoid Crinoids are commonly known as sea lilies, though they are animals, not plants. Crinoids are echinoderms related to starfish, sea urchins, and brittle stars.