Tetragramma w/spines
Large Tetragramma sp. with small spines preserved on surface.
Walnut Formation, Fredericksburg Group
Albian Age (Lower Cretaceous)
Harker Heights, Bell Co., TX
Copyright
© E. Rose 2012
By erose
Large Tetragramma sp. with small spines preserved on surface.
Walnut Formation, Fredericksburg Group
Albian Age (Lower Cretaceous)
Harker Heights, Bell Co., TX
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