article_snippet.sent: The researchers looked at 477 anatomical features across 81 individual dinosaurs found in museums throughout Europe and US.
article_snippet.sent: Brontosaurus and Apatosaurus used statistical techniques to calculate the differences between species and genera of 'diplodocid' dinosaurs - a group that included some of the longest animals that ever walked on the Earth.
article_snippet.sent: Brontosaurus and Apatosaurus looked at 477 anatomical features across 81 individual dinosaurs.
article_snippet.sent: Brontosaurus and Apatosaurus looked at 477 anatomical landmarks across 81 individual dinosaurs.
article_snippet.sent: The scientists also found two members of the group, Diplodocus and Supersaurus, may have reached lengths of up to 112 ft (34 metres).
article_snippet.sent: Apatosaurus, also from the group, had an average length of 75 ft (22.8 metres), and weighed around 16.4 tonnes, The scientists said.
article_snippet.sent: Diplodocus had a slender, horse-like skull, rather than the box-like one reconstructed by Othniel Charles Marsh and modelled on Camarasaurus.
highlights_snippet.sent: New study calculated the differences between families of Diplodocid .
  