Apatosaurus different dinosaur individuals. Among the many notable differences are the widerand presumably strongerneck of "Apatosaurus" species compared to "B.excelsus". Other species previously assigned to "Apatosaurus", such as "Elosaurus parvus" and "Eobrontosaurus yahnahpin" were also reclassified as "Brontosaurus". Some features proposed to separate "Brontosaurus" from "Apatosaurus" include: posterior dorsal vertebrae with the centrum longer than wide; the scapula rear to the acromial edge and the distal blade being excavated; the acromial edge of the distal scapular blade bearing a rounded expansion; and the ratio of the proximodistal length to transverse breadth of the astragalus 0.55 or greater. Sauropod expert Michael Daniel
The Unknown Known I know." "The Unknown Known" was screened in the main competition section at the 70th Venice International Film Festival, and premiered at the Telluride Film Festival on August 29, 2013. The documentary has an 84% approval rating on the review aggregator website Rotten Tomatoes, based on 105 reviews with an average rating of 8.2/10. The website's critical consensus reads, "Viewers hoping to see Donald Rumsfeld admit making mistakes in public office may find "The Unknown Known" frustrating – but no less fascinating." On Metacritic, the film has a weighted average score of 69 out of 100, based on 30 critics,