According to more recent studies, the ichnogenus Ichniotherium refers to trackmakers of the clade Diadectomorpha. It is a group of Late Carboniferous and Early Permian reptile-like amphibians that include some of the earliest herbivorous tetrapods on Earth. Diadectomorph fossil remains are known from Canada, the Czech Republic, Germany, Great Britain, Morocco, Poland and the US. The Kötschach-Mauthen specimen is the only potential record of this important and wide-spread group of terrestrial tetrapods in the whole Alps.

In order to confirm the previous footprint report, the first two authors explored the Geopark Carnic Alps in 2013. A new site with reddish sand-, silt- and claystones of the Laas Formation yielded footprints of two more tetrapod ichnotaxa, Amphisauropus Haubold, 1970 and Dromopus Marsh, 1894. Potential producers of these traces are Seymouriamorpha, i.e. ca. 50 cm long reptile-like amphibians related to the Diadectomorpha, and early diapsids of similar size. The trace-bearing sediments are associated with invertebrate traces, root traces, mud cracks, ripple marks and microbially induced sedimentary structures characterizing floodplain fines within a thick series of alluvial fan deposits. The new footprint material supports the supposed Early Permian age of the Laas Formation and its interpretation as a continental basin of the eastern Alps almost 300 million years ago.