Diurnal

Trapdoor spider

Hidden door, lightning strike.

Ocean Whitefish

A tilefish by blood, a whitefish by name

Limpet

Cling hard, graze smart, ride the tide.

Africanized bee (killer bee)

Same species-different attitude.

Kaua'i ‘Ō‘ō

The vanished voice of Kauai

Dimetrodon

Permian sailback-before dinosaurs

Deinocheirus

The terrible-handed wetland omnivore

Haikouichthys

A tiny fossil at vertebrates' dawn

Quetzalcoatlus northropi

Largest skies, long-necked hunter

Ornithocheirus

Bird-hand ruler of Cretaceous skies

Allosaurus

Jurassic hunter of the Morrison

Lystrosaurus

The beaked survivor of Earth's worst crisis

Vegavis

A polar clue to waterfowl origins

Scutosaurus

Permian armor, plant-powered

Pachycephalosaurus

Built like a bipedal battering ram

Wiwaxia

Spiny armor from the Cambrian seafloor

Barylambda

Heavyweight of the Paleocene

Hatzegopteryx

Hateg's giant sky-stalker

Xiphactinus

Not a dinosaur-Cretaceous sea predator

Feather Star

Feathery arms, drifting meals

Spanish Water Dog

Curly-coated worker: land and water.

Opaleye (Rudderfish)

The kelp-forest fish with an opal eye

Ozark Bass

The Ozarks' star-spotted rock bass

Onager

Iran's lightning-footed onager