 Within the Diadectomorpha, "Limnoscelis" is often found to be sister to Diadectidae and "Tseajaia", with the later clades forming a monophyletic group in many cladistic anaylses.The below cladogram shows the order Diadectomorpha, modified from Heaton (1980).Due to its highly generalized post-cranial morphology, "Limnoscelis" has long been thought to be morphologically similar to a hypothetical ancestor of all amniotes, although its occurrences are too recent to be this ancestor itself.