Skeletten van walvissen

Smithsonian - Washington: Rhodocetus skeleton (Photographer: JJ Wietsma)

Smithsonian - Washington: Rhodocetus skeleton and cheekbone of modern whale (Photographer: JJ Wietsma)

Smithsonian - Washington: Basiliosaurus skeleton (photographer: JJ Wietsma)

Smithsonian - Washington: Astralagus botten (Photographer: JJ Wietsma)