Who needs an osteologist? (Installment 41)

Today's contribution comes from Megan Sharpe, a forensic anthropology graduate student in Boston.  She found this error in a kids' book called Skeleton from the DK Eyewitness series... and it's a very prominent one:

Can you spot what's wrong? :-)

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Previous Installments of Who needs an osteologist?

• Corvin Castle needs an osteologist.
• Loch Ness needs an osteologist.
• Giant Screen Films/IMAX needs an osteologist.
• The National Museum in Copenhagen and the Viking Ship Museum in Oslo need an osteologist.
• The American Anthropological Association needs an osteologist.
• Greensboro Science Center needs an osteologist.
• Scholastic News needs an osteologist.
• From Darkness on the BBC needs an osteologist.
• The Iraqi National Museum needs an osteologist.
• Halloween stores need an osteologist.
• The New York Times needs an osteologist.
• Morgan's Cove needs an osteologist.
• Dunstable Baptist Church needs an osteologist.
• Once again, Bones needs an osteologist.
• Tampa Bay History Center needs an osteologist.
• The Archaeological Museum of the Castle of Santo Anton needs an osteologist.
• The Gruppo Archeologico della Val Nure needs an osteologist.
• Polish archaeologists at the site of Kamien Pomorski need an osteologist.
• The South Florida Science Center and Aquarium needs an osteologist.
• GitHub needs an osteologist.
• The Telegraph needs an osteologist.
• University Museum in Chieti-Pescara needs an osteologist.
• NKP Salve Institute of Medical Sciences needs an osteologist.
• Huffington Post and the Mars Rover need an osteologist.
• PBS and Richard III need an osteologist.
• Abbot House Museum needs an osteologist.
• The Zanjan Museum needs an osteologist.
• National Geographic Channel's "Nazi War Diggers" needs an osteologist.
• BBC/NOVA needs an osteologist.
• The Penn Museum needs an osteologist.
• National Geographic needs an osteologist.
• Acura needs an osteologist.
• The "African" woman in Fairford, England, needs an osteologist.
• Museo delle Grotte needs an osteologist.
• Either NPR or Yale needs an osteologist.
• Yorkshire Museum needs an osteologist.
• Staffordshire University needs an osteologist.
• And, of course, Bones needs an osteologist.