allie alamosaurus is a saurapod she is the first saurapod in the dinosaur train special big dinosaur week she is only shown once but  her species is shown many times one example is in the dinosaur train movie dinosaur big city allie is a herbivore she is known to eat lots of plants she is shown in the episode rember the alamosaurus in that episode the conducter says allie is a teenager if you look closley you can see allie has a crest on her head allie is one big dinosaur.Apatosaurus