Evolution photos

Evolution photos

Evolution photos

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Soapberries in Oklahoma

Soapberries in Oklahoma

Oklahoma Ice Storm

Oklahoma Ice Storm

Black hickory bud in spring

Black hickory bud in spring

Young leaves of poison ivy

Young leaves of poison ivy

Post oak bud in spring

Post oak bud in spring

Mollusk fossils in Oklahoma

Mollusk fossils in Oklahoma

Oklahoma penstemon

Oklahoma penstemon

Sassafras leaves

Sassafras leaves

Tentworms and predators

Tentworms and predators

Blackjack oak buds

Blackjack oak buds

Chittamwood young leaves

Chittamwood young leaves

Seaside alder leaves and cones

Seaside alder leaves and cones

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Sassafras leaves

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Sassafras leaves

Sassifras albidum, a small tree in Oklahoma, has three different leaf shapes. 2013 photo by Stanley Rice