Opinions from T. Ptaszyński and G. Niedźwiedzki 2004
- 'Akropus diversus is a subjective synonym of Anhomoiichnium diversum'
- 'Amphisauropus belongs to Amphibia'
- 'Amphisauropus latus belongs to Amphisauropus' according to Haubold 1970
- 'Anhomoiichnium belongs to Reptilia'
- 'Anhomoiichnium diversum belongs to Anhomoiichnium' according to Schmidt 1959
- 'Anthichnium is a subjective synonym of Batrachichnus'
- 'Batrachichnus belongs to Amphibia'
- 'Dimetropus belongs to Reptilia'
- 'Dimetropus latus belongs to Dimetropus' according to Heyler and Montenat 1980
- 'Dromopus belongs to Rhynchosauroidae'
- 'Ichnium microdactylus belongs to Ichnium' according to Pabst 1896
- 'Limnopus belongs to Amphibia'
- 'Limnopus glenshawensis belongs to Limnopus' according to Raw 1919
- 'Limnopus zeilleri belongs to Limnopus' according to Delage 1912
- 'Palmichnus belongs to Rhynchosauroidae'
- 'Palmichnus lacertoides belongs to Palmichnus'
- 'Paradoxichnium belongs to Rhynchosauroidae'
- 'Paradoxichnium problematicum belongs to Paradoxichnium' according to Müller 1959
- 'Paradoxichnium tumlinense belongs to Paradoxichnium'
- 'Phalangichnus belongs to Rhynchosauroidae'
- 'Phalangichnus gagoli belongs to Phalangichnus'
- 'Phalangichnus gradzinskii belongs to Phalangichnus'
- 'Phalangichnus perwangeri belongs to Phalangichnus' according to Conti et al. 1977
- 'Rhynchosauroidae belongs to Reptilia'
- 'Rhynchosauroides belongs to Rhynchosauroidae'
- 'Rhynchosauroides kuletae belongs to Rhynchosauroides'
- 'Rhynchosauroides pallinii belongs to Rhynchosauroides' according to Conti et al. 1977
- 'Saurichnites leisnerianus is recombined as Dimetropus leisnerianus' according to Geinitz 1863
- 'Saurichnites salamandroides is recombined as Batrachichnus salamandroides'
- 'Varanopus belongs to Reptilia'