Echinoid 10
US$12.85
- Species: Macraster Texanus, Roemer
- Size Diameter: 2.75 inches, (6.985 centimeters)
- Weight: 0.520 pounds (237 grams)
- Collecting Site: Rock Creek
- Locality: Tarrant County, Fort Worth, Texas
- Formation: Washita Group, Fort Worth Formation
- Age: 100 Million Years old
- Note: Top of fossil echinoid has oyster shells attached randomly.