Evolution photos

Evolution photos

Evolution photos

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Coryptantha cactus in fruit, Oklahoma

Coryptantha cactus in fruit, Oklahoma

Predator mimicry in moth

Predator mimicry in moth

Lichens on bark

Lichens on bark

Hottonia inflata, Oklahoma

Hottonia inflata, Oklahoma

Bur oak, Oklahoma

Bur oak, Oklahoma

Persimmon fruits

Persimmon fruits

A spider and its prey

A spider and its prey

Blooming cactus at Big Bend

Blooming cactus at Big Bend

Maples in the desert?

Maples in the desert?

Desert willow, Big Bend

Desert willow, Big Bend

Endemic oak at Big Bend

Endemic oak at Big Bend

Stromatolites in Oklahoma

Stromatolites in Oklahoma

Fossilized footprint of Acrocanthosaurus, Paluxy River, Texas

Fossilized footprint of Acrocanthosaurus, Paluxy River, Texas

Glen Kuban and dinosaur trackways

Glen Kuban and dinosaur trackways

Seaside alder cones in Oklahoma

Seaside alder cones in Oklahoma

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Coryptantha cactus in fruit, Oklahoma

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Coryptantha cactus in fruit, Oklahoma

April 2014, Lake Murray State Park. Stanley Rice photo.