Euhelopus

Seymour et al (2009) suggest that because of this it would have been energetically inefficient for a sauropod to raise its head to feed on high food sources. In 2010, Christian (2010) challenged this hypothesis with his study of the Euhelopus zdanskyi. Studying the Euhelopus zdanskyi and Brachiosaurus revealed that energy consumption and stress for raising the neck was lower than previously estimated (Christian 2010). This was contrary to what Seymour et al (2009) estimated and it was estimated that