[1] Preliminary investigations identified Krasiejów as a diverse vertebrate assemblage, named the "Paleorhinus fauna", preserving partially articulated skeletons of amphibians and reptiles, including possible early dinosaurs from the middle to late Carnian.

[1] From the upper of the fossil layers, nearly 400 bones of a single taxon originally identified as an early dinosaur were collected, including four partially articulated skeletons of individuals.

[4] Systematic position after Nesbitt (2011):[6] Scleromochlus Pterosauria Lagerpeton Dromomeron Marasuchus Lewisuchus/Pseudolagosuchus Asilisaurus Eucoelophysis Sacisaurus Silesaurus Theropoda Sauropodomorpha Ornithischia Herbivory has been suggested for silesaurids in general and Silesaurus in particular based on tooth shape, and a 2014 study by the paleontologists Tai Kubo and Mugino O. Kubo of microwear on its teeth found it consistent with herbivory on soft objects, by comparing with wear on the teeth of extant mammals, though omnivory could not be ruled out.

[7] A 2019 study by paleontologist Martin Qvarnström and colleagues examining coprolites (fossil dung) that contained beetles attributed them to Silesaurus based on size and other factors.

In 2010, the paleontologists Rafał Piechowski and Jerzy Dzik considered such proportions typical of fast-running, quadrupedal animals, but noted that the long tail of Silesaurus which would have acted as a counterweight to the body, as well as the very gracile forelimbs, indicates it retained the ability for fast bipedal running.

The animal shared its environment of extensive swamplands and fern vegetation with a wealth of invertebrates as well as dipnoan and ganoid fishes, temnospondyls, phytosaurs and early pterosaurs.