Collecta Prehistoric Life Acrocanthosaurus Deluxe 1:40 Scale in Window Box - Vinyl Toy Dinosaur Figure All CollectA products are rigorously tested to ensure they meet the highest safety standards. Acrocanthosaurus was remarkable for the high neural spines on its neck, back and tail whose function is unknown. These may have formed a low sail or supported a thick ridge of muscle and flesh. Acrocanthosaurus means "High-spined Lizard" Working with experts from across the globe, Collecta hand-painted figurines are all factually accurate and paleontologist-approved, so little ones really get to learn while they play.