• Species: Colinoceras tarrantense
  • Variety: Ammonite Group in concretion
  • Size Diameter: 11.0 inches (27.94 centimeters)
  • Weight: 19.4 pounds (8800 grams)
  • Collecting Site: Little Bear Creek
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Species: Colinoceras tarrantense
  • Variety: Ammonite with attached oyster shells
  • Size Diameter: 7.0 inches (17.78 centimeters)
  • Weight: 5.8 pounds (2631 grams)
  • Collecting Site: Red River Apartments/Hwy 360
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Species: Colinoceras tarrantense
  • Size Diameter: 4.5 inches (11.43 centimeters)
  • Weight: 1.6 pounds (726 grams)
  • Collecting Site: Little Bear Creek
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Species: Colinoceras tarrantense
  • Variety: Septarian Ammonite with Calcite veins
  • Size Diameter: 7.50 inches (19.05 centimeters)
  • Weight: 5.0 pounds (2268 grams)
  • Collecting Site: Red River Apartments/Hwy 360
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Species: Colinoceras tarrantense
  • Variety: Septarian Ammonite with Calcite veins
  • Size Diameter: 9.50 inches (24.13 centimeters)
  • Weight: 9.6 pounds (4355 grams)
  • Collecting Site: Little Bear Creek
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Species: Colinoceras tarrantense
  • Variety: Variable sized Ammonite set
  • Size Diameter: 3, 2.5, 1.5 inches (7.62, 6.35, 3.81 centimeters)
  • Weight: 0.794 pounds (360 grams)
  • Collecting Site: Little Bear Creek
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Conlinoceras tarrantense 
  • Variety: Cut and Polished Ammonite halves
  • Fossil weight: 1.60 pounds (724 grams)
  • Fossil width:  5.0 inches (12.7 centimeters)
  • Collecting Site: Johnson Creek
  • Locality: Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90 - 100 Million years old
  • Species: Colinoceras tarrantense
  • Variety: Variable sized Ammonite set
  • Size Diameter: 2.0, 2.0, 1.0 inches (5.08, 5.08, 2.54 centimeters)
  • Weight: 0.324 pounds (147 grams)
  • Collecting Site: Johnson Creek
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Species: Colinoceras tarrantense
  • Size Diameter: 3.5 inches (8.89 centimeters)
  • Weight: 0.838 pounds (380 grams)
  • Collecting Site: Johnson Creek
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Species: Colinoceras tarrantense
  • Variety: Variable sized Ammonite set
  • Size Diameter: 3, 2.5, 1.5 inches (7.62, 6.35, 3.81 centimeters)
  • Weight: 0.847 pounds (384 grams)
  • Collecting Site: Little Bear Creek
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Species: Colinoceras tarrantense
  • Variety: Variable sized Ammonite set
  • Size Diameter: 3, 2.5, 1.5 inches (7.62, 6.35, 3.81 centimeters)
  • Weight: 0.834 pounds (379 grams)
  • Collecting Site: Little Bear Creek
  • Locality: Tarrant County, Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90-100 Million Years old
  • Conlinoceras tarrantense 
  • Variety: Cut and Polished Ammonite halves
  • Fossil weight: 0.696 pounds (316 grams)
  • Fossil width:  3.5 inches (8.89 centimeters)
  • Collecting Site: Little Bear Creek
  • Locality: Arlington, Texas
  • Formation: Tarrant Formation
  • Age: 90 - 100 Million years old