One interesting feature of Atoposaurus is that it lacked dorsal scutes, a common characteristic of atoposaurids as well as most crurotarsans. The absence of scutes, along with its relatively small size (specimens reach lengths of up to 17 cm), narrow supratemporal fossae, wide occipital region, thin postorbital bar, and smooth ornamentation,[1] has led some paleontologists to believe that it is perhaps a juvenile form of another genus within Atoposauridae, most likely Alligatorellus.[2]
^lordansky, N N ( 1973) The skull of the Crocodilia In Biology of the Reptilia, edited by Gans, C and Parsons, T S , pp 201-262 Academic Press, London and New York.
^Buscalioni, Angela D.; and Jose Luis Sanz (1988). Phylogenetic Relationships of the Atoposauridae (Archosauria, Crocodylomorpha). Historical Biology I: 233-250