Ballanocidaris? strombecki (Desor)
Unit 3, Upper Member, Glen Rose Formation, Trinity Group (Albian) Kendall County, Texas. This specimen surprised as I had previously understood them to be only found in Lower Member but apparently they range higher in the formation (pers. comm. W. Rader)
Photo Information
- Taken with Apple iPhone 6s
- Focal Length 4.2 mm
- Exposure Time 1/129
- f Aperture f/2.2
- ISO Speed 25
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