Echinoid 8
US$12.95
- Species: Macraster Texanus, Roemer
- Size Diameter: 3.0 inches, (7.62 centimeters)
- Weight: 0.757 pounds (344 grams)
- Collecting Site: Timberbrook construction site, Oliver Creek
- Locality: Denton County, Justin, Texas
- Formation: Washita Group, Fort Worth Formation
- Age: 100 Million Years old
- Top of fossil echinoid covered with Serpula worm tubes.