Opinions from J. O. Calvo 2007
- 'Abelichnus belongs to Carnosauria'
- 'Abelichnus astigarrae belongs to Abelichnus'
- 'Barrosopus belongs to Aves'
- 'Barrosopus slobodai belongs to Barrosopus' according to Coria et al. 2002
- 'Barrosopus slobodai belongs to Barrosopus'
- 'Bressanichnus belongs to Coelurosauria'
- 'Bressanichnus patagonicus belongs to Bressanichnus'
- 'Calibarichnus belongs to Theriodontia'
- 'Calibarichnus ayestarani belongs to Calibarichnus'
- 'Chirotheriidae [misspelled as Chirotheridae] belongs to Pseudosuchia'
- 'Deferrariischnium belongs to Coelurosauria'
- 'Deferrariischnium mapuchensis belongs to Deferrariischnium'
- 'Delatorrichnus belongs to Coelurosauria'
- 'Delatorrichnus goyenechei belongs to Delatorrichnus'
- 'Gallegosichnus belongs to Therapsida'
- 'Gallegosichnus garridoi belongs to Gallegosichnus'
- 'Ignotornis belongs to Aves'
- 'Ingenierichnus belongs to Reptilia'
- 'Ingenierichnus sierrai belongs to Ingenierichnus'
- 'Limayichnus belongs to Iguanodontidae'
- 'Limayichnus major belongs to Limayichnus'
- 'Palaciosichnus belongs to Theriodontia'
- 'Palaciosichnus zettii belongs to Palaciosichnus'
- 'Picunichnus belongs to Coelurosauria'
- 'Picunichnus benedettoi belongs to Picunichnus'
- 'Pteraichnus belongs to Pteraichnidae'
- 'Rogerbaletichnus belongs to Anomodontia'
- 'Rogerbaletichnus aguilerai [misspelled as Rogerbaletichnus aquilerai] belongs to Rogerbaletichnus'
- 'Sarmientichnus belongs to Sauropodidae'
- 'Sarmientichnus scagliai belongs to Sarmientichnus'
- 'Sauropodichnus belongs to Sauropoda'
- 'Sauropodichnus giganteus belongs to Sauropodichnus'
- 'Shimmelia belongs to Chirotheridae'
- 'Shimmelia chirotheroides belongs to Shimmelia'
- 'Sousaichnium belongs to Iguanodontidae'
- 'Sousaichnium monettae belongs to Sousaichnium'
- 'Wildeichnus belongs to Anchisauripodidae'
- 'Wildeichnus navesi belongs to Wildeichnus'