Aphanosauria calcaneal tuber. Although this structure is smaller in aphanosaurs than in pseudosuchians, it is still much larger than in other avemetatarsalians, most of which don't even possess the structure. A few dinosauriformes also have small calcaneal tubers, although aphanosaurs have larger and rounder tubers than these taxa ("Marasuchus" and a few basal silesaurids). In cross-section, the calcaneal tubers of aphanosaurs are oval-shaped, taller than wide. Most foot material is fragmentary in this group, with only a few phalanges (toe bones) and metatarsals (primary elongated foot bones) known. Based on the length of the preserved metatarsals, the foot was likely rather
Roll the Bones rated it as one of the band's best ever songs partly due to its different texture than the rest of the album. The band was optimistic about its musical form, but faced the problem of overworking its arrangement because all the parts sounded good to them. In the end, they learned that by stripping the song back resulted in a stronger track. "Roll the Bones" was named after a science fiction story by Fritz Lieber that Peart had read some fifteen years prior titled "Gonna Roll the Bones". Though the story had no influence on the music or its message,