A humped Spinosaurus aegypticus
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"Figure 4 — Palaeoartists restore animal fats with difficulty. It has been proposed that large vertebral spines in fossil species such as Spinosaurus aegypticus (A) supported humps of fatty tissues like those of modern camels, but fatty humps are not directly supported by skeletons in modern species including (B) lowland gorillas (Gorilla gorilla), (C) dromedaries (Camelus dromedaries) and (D) white rhinoceros (Ceratotherium simum). Vertebral spines anchor sails in some modern lizards, such as crested chameleons (Trioceros cristatus; E), and withers anchor powerful neck muscles as in American bison (Bison bison; F). B–D and F from Goldfinger (2004); E historic x-ray (1896) by Josef Maria Eder."
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