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Rare specimens
Species: Colinoceras tarrantense
Size Diameter: 7.75 inches (19.68 centimeters)
Weight: 12.8 pounds (5806 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Large Rare Texas ammonite resting on a septarian concretion. Septarian calcite veins exposed/saved on ammonite.
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Species: Colinoceras tarrantense
Size Diameter: 2.0 inches (5.08 centimeters)
Weight:0.188 pounds (85 grams)
Collecting Site: Bear Creek/Hwy 360
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
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Species: Colinoceras tarrantense
Size Diameter: 3.0 inches (7.62 centimeters)
Weight: 0.434 pounds (197 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
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Species: Colinoceras tarrantense + Metengonoceras Dumbli
Size Diameter: 4.75 inches (12.10 centimeters)
Weight: 1.0 pounds (453.6 grams)
Collecting Site: Little Bear Creek/Hwy 360
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Texas fossil ammonite found with a second fossil ammonite attached back to back. Side picture available showing how it was prepared, leaving both specimens together. Very unusual find from this formation.
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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
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Species: Colinoceras tarrantense
Slab Size Diameter:7.5 inches (19.05 centimeters)
Weight: 3.4 pounds (1542 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Note: Texas fossil ammonites found in a large depositional rock slab. Multiple partial smaller ammonite pieces found in same slab, with oyster shells.
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Species: Colinoceras tarrantense
Size Diameter:8.0 inches (20.32 centimeters) Overall diameter with calcite veins : 9.5 inches ( 24.13 centimeters )
Weight: 8.2 pounds (3719.5 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Note: Texas fossil ammonite that was carefully removed from the enclosing concretion, leaving the septarian calcite veins in-place. Ammonite has original shell calcite material.
Recommendation : Hand carry or pickup. Not able to ship this fossil specimen.
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Species: Colinoceras tarrantense
Size Diameter: 2.75 inches (6.985 centimeters)
Weight: 0.382 pounds (173 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
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Species: Colinoceras tarrantense
Size Diameter: 2.0 inches (5.08 centimeters)
Weight: 0.152 pounds (70grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
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Species: Colinoceras tarrantense
Size Diameter: 3.0 inches (7.62 centimeters)
Weight: 0.440 pounds (200 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
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Species: Colinoceras tarrantense
Slab Size Diameter:12.0 inches (30.48 centimeters)
Weight: 6.4 pounds (2903 grams) The two larger ammonites are each 5.0 inches diameter. ( 12.7 centimeters )
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Note: Texas fossil ammonites found in a large depositional rock slab. Multiple partial smaller ammonite pieces found in same slab, with oyster shells.
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Species: Colinoceras tarrantense
Size Diameter:3.5 inches (8.89 centimeters)
Weight: .644 pounds (292 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Note: Texas fossil ammonite showing internal chambers Stands come with this fossil for both halves.
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Species: Colinoceras tarrantense
Size Diameter: 5.5 inches (13.97 centimeters)
Weight: 2.182 pounds (990 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
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Species: Colinoceras tarrantense
Size Diameter: 5.5 inches (13.97 centimeters)
Weight: 1.946 pounds (882.7 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Fossil comes with display stand.
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Species: Colinoceras tarrantense fossil group
Size Diameter: 5.25 inches (13.34 centimeters)
Weight: 1.784 pounds (809.2 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Unusal group of fossils. Two small ammonites, one oyster and a piece of petrified wood.
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Species: Paraconlinoceras leonense
Size Diameter: 2.0 inches (5.08 centimeters)
Weight: 0.218 pounds (99 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Fossil comes with stand
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