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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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Texas Species: Colinoceras tarrantense
Size Diameter: 4.0 inches (10.16 centimeters)
Weight:0.910 pounds (413 grams)
Collecting Site: Bear Creek/Hwy 360
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
A few oysters are attached to fossil ammonite
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Texas Species: Colinoceras tarrantense
Size Diameter: 5.5 inches (13.97 centimeters)
Weight: 2.6 pounds (1179 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Note: Septarian ammonite removed from enclosing concretion. Some of the septarian calcite veins were saved. Assorted oysters found on ammonite. The shell material is a taupe color where preserved.
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Species: Colinoceras tarrantense
Size Diameter: 4.25 inches (10.80 centimeters)
Weight: 1.08 pounds (491 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 few septarian calcite veins still attached.
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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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Texas Species: Colinoceras tarrantense
Ammonite Diameter:3.25 inches (8.255 centimeters)
Weight: 0.580 pounds (263 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: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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Texasd Species: Colinoceras tarrantense
Ammonite Size Dia.: 3.0 inches (7.62 centimeters)
Weight: 0.454 pounds (207 grams)
Collecting Site: Little Bear Creek
Locality: Tarrant County, Arlington, Texas
Formation: Tarrant Formation
Age: 90-100 Million Years old
Note: Circular indentations suggest this ammonite may have been damaged by a large Cretaceous fish or Mosasaur. See picture listed under details.
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Texas Species: Colinoceras tarrantense
Size Diameter:3.0 inches (7.62 centimeters)
Weight: .418 pounds (190 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: 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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