The paleoecology of "Trilophosuchus" is difficult to determine because of a poor understanding of the ecology of the living crocodilians that have the most similar appearance to the genus: "Paleosuchus" and "Osteolaemus". Both genera are semiaquatic, and have been proposed to inhabit small streams in closed-canopy forests, fast-flowing streams, larger, slow moving rivers, and lakes. While "Paleosuchus" and "Osteolaemus" are the most similar living crocodlylians to "Trilophosuchus", "Trilophosuchus" more closely resembles early crocodyliforms such as notosuchians and protosuchians that were entirely terrestrial.