Now Playing Tracks


Pteraspis stensioei

…is an extinct species of jawless fish that lived during the early Devonian period. Like its heterostracan relatives pteraspis was covered in armor plating and protective spines. In-order to swim with all that heavy armor they had a large hypocercal tail to allow them to move in the water, its rostum and streamlined shape made it a pretty good swimmer. It is thought to have fed on plankton and other small invertebrates with sucking mouth parts.



Image Source(s)

We make Tumblr themes