Evidence of multiple species discovered in a wide range of localities proves that Stanocephalosaurus were present all across Pangea throughout the early to mid Triassic.
[3] The earliest known discovery of the genus was on November 9, 1932 by Roland T. Bird while on a motorcycle trip, where he found a partial skull "six and six-tenths miles southwest of Winslow, Arizona, near the road to Pine and Payson along the edge of a small mesa with other fossil remains."
The narrow skull and slender parasphenoid, internal nairs, as well as interpalatal vacuities were key characteristics in identifying this fossil as a new genus.
[4] Other skull regions previously inaccessible or too poorly preserved on the Stanocephalosaurus have been observed with X-ray micro-CT scans, including the otic capsule, delta groove of the exoccipital, as well as parts of the arterial and nervous system.
Air pockets around the stapes of Stanocephalosaurus have been hypothesized to act as resonance chambers, meaning that the spoon-shaped inner ear bone could be related to underwater hearing.
[1] Due to the cranial morphology of the Stanocephalosaurus' narrow head with an elongated preorbital region compared to other temnospondyls, stress levels during biting are slightly higher than those with a wider and shorter skull.
[6] The vertebrae of the Stanocephalosaurus are rhachitomous, with a neural arch and a bipartite centrum that is divided into a large, unpaired wedge-shaped intercentrum and smaller paired pleurocentra.
Due to evidence suggesting that they were better adapted toward life in water, it can be assumed that their diets have shifted towards eating aquatic organisms as well.
[8] Due to being largely aquatic, Stanocephalosaurs might have lain in wait for prey below the surface of the water, and lifted its massive head to open its mouth wide to suck the food inside, much like modern crocodiles.
The small teeth present across the genus in addition to the large surface area for neck muscle attachment could suggest suction feeding through opening their mouths quickly.
[3] Though there is little certainty in how Stanocephalosaurus breathed, paleontologists suggest that it had air pockets around the stapes, which have been hypothesized to act as resonance chambers, meaning that the inner ear bone could be related to underwater hearing.
The discovery of S. amenasensis in a gypsum layer, which corresponds to the infilling of a salt lake, suggests that there was an evolution of an alluvial plain under a strong seasonal climate.
The gypsum crust many of these fossils were discovered under acted as a powerful preservation tool, protecting the bones from atmospheric degradation.