Opinions from C. H. Hitchcock 1871
- 'Amblonyx giganteus belongs to Amblonyx'
- 'Amblypus dextratus belongs to Amblypus'
- 'Anisopus gracilior is recombined as Anisichnus gracilior'
- 'Anomoepus intermedius belongs to Anomoepus'
- 'Anomoepus major belongs to Anomoepus'
- 'Anomoepus minimus belongs to Anomoepus'
- 'Anomoepus minor belongs to Anomoepus'
- 'Anticheiropus hamatus belongs to Anticheiropus'
- 'Anticheiropus pilulatus belongs to Anticheiropus'
- 'Antipus bifidus belongs to Antipus'
- 'Antipus flexiloquus belongs to Antipus'
- 'Apatichnus bellus belongs to Apatichnus'
- 'Apatichnus circumagens belongs to Apatichnus'
- 'Apatichnus curvatus is recombined as Anomoepus curvatus'
- 'Arachichnus dehiscens belongs to Arachichnus'
- 'Argozoum disparidigitatum belongs to Argozoum'
- 'Argozoum paridigitatum belongs to Argozoum'
- 'Batrachoides nidificans belongs to Batrachoides'
- 'Batrachopus gracilis is recombined as Anisichnus gracilis'
- 'Bisulcus undulatus belongs to Bisulcus'
- 'Brontozoum approximatum belongs to Brontozoum'
- 'Brontozoum divaricatum belongs to Brontozoum'
- 'Brontozoum exsertum belongs to Brontozoum'
- 'Brontozoum tuberatum belongs to Brontozoum'
- 'Brontozoum validum belongs to Brontozoum'
- 'Cheirotheroides pilulatus belongs to Cheirotheroides'
- 'Chelonoides [misspelled as Chelonioides] belongs to Chelonia'
- 'Chelonoides incedens [misspelled as Chelonioides incedens] belongs to Chelonoides'
- 'Comptichnus obesus belongs to Comptichnus'
- 'Corvipes lacertoideus belongs to Corvipes'
- 'Exocampe arcta belongs to Exocampe'
- 'Exocampe minimus is corrected as Exocampe minima and belongs to Exocampe'
- 'Exocampe ornata belongs to Exocampe'
- 'Gigadipus caudatus is recombined as Gigantitherium caudatum'
- 'Gigantitherium minus belongs to Gigantitherium'
- 'Grallator cuneatus belongs to Grallator'
- 'Grallator cursorius belongs to Grallator'
- 'Grallator formosus belongs to Grallator'
- 'Grallator tenuis belongs to Grallator'
- 'Grammepus erismatus belongs to Grammepus'
- 'Harpedactylus crassus belongs to Harpedactylus'
- 'Harpedactylus gracilior belongs to Harpedactylus'
- 'Harpedactylus gracilis belongs to Harpedactylus'
- 'Harpedactylus rectus is recombined as Platypterna recta'
- 'Helcura anguinea belongs to Helcura'
- 'Helcura caudata belongs to Helcura'
- 'Helcura surgens belongs to Helcura'
- 'Hoplichnus equus belongs to Hoplichnus'
- 'Hoplichnus poledrus belongs to Hoplichnus'
- 'Hyphepus fieldi belongs to Hyphepus'
- 'Isocampe strata belongs to Isocampe'
- 'Lagunculapes latus [misspelled as Lagunculapes latens] belongs to Lagunculapes'
- 'Leptonyx lateralis belongs to Leptonyx'
- 'Macropterna divaricans belongs to Macropterna'
- 'Macropterna gracilipes belongs to Macropterna'
- 'Macropterna vulgaris belongs to Macropterna'
- 'Ornithichnites deanii is recombined as Platypterna deaniana'
- 'Ornithichnites giganteus is recombined as Brontozoum giganteum'
- 'Ornithichnites gracilis is recombined as Grallator gracilis'
- 'Ornithichnites ingens is recombined as Tridentipes ingens'
- 'Ornithichnites minusculus is recombined as Brontozoum minusculum'
- 'Ornithichnites parallelus is recombined as Grallator parallelus'
- 'Ornithoidichnites delicatulus is recombined as Platypterna delicatula'
- 'Ornithoidichnites elegans is recombined as Tridentipes elegans'
- 'Ornithoidichnites elegantior is recombined as Tridentipes elegantior'
- 'Ornithoidichnites gracilior is recombined as Ornithopus gracilior'
- 'Ornithoidichnites gracillimus is recombined as Anomoepus gracillimus'
- 'Ornithoidichnites lyellii is recombined as Amblonyx lyellianus'
- 'Ornithoidichnites redfieldii is recombined as Argozoum redfieldianum'
- 'Ornithoidichnites sillimani is recombined as Brontozoum sillimanium'
- 'Ornithoidichnites tenuis is recombined as Platypterna tenuis'
- 'Ornithopus gallinaceus belongs to Ornithopus'
- 'Orthodactylus floriferus belongs to Orthodactylus'
- 'Orthodactylus introvergens belongs to Orthodactylus'
- 'Orthodactylus linearis belongs to Orthodactylus'
- 'Otozoum caudatum belongs to Otozoum'
- 'Otozoum moodii belongs to Otozoum'
- 'Palamopus clarki belongs to Palamopus'
- 'Platypterna digitigrada belongs to Platypterna'
- 'Platypterna varica belongs to Platypterna'
- 'Plectropterna angusta belongs to Plectropterna'
- 'Plectropterna gracilis belongs to Plectropterna'
- 'Plectropterna lineans belongs to Plectropterna'
- 'Plesiornis aequalipes belongs to Plesiornis'
- 'Plesiornis mirabilis belongs to Plesiornis'
- 'Plesiornis pilulatus belongs to Plesiornis'
- 'Plesiornis quadrupes belongs to Plesiornis'
- 'Polemarchus gigas belongs to Polemarchus'
- 'Sauroidichnites abnormis is recombined as Typopus abnormis'
- 'Sauroidichnites barrattii is recombined as Chimaerichnus barratti'
- 'Sauroidichnites deweyi is recombined as Anisichnus deweyanus'
- 'Sauroidichnites heteroclitus is recombined as Ancyropus heteroclitus'
- 'Sauroidichnites minitans is recombined as Plectropterna minitans'
- 'Selenichnus breviusculus belongs to Selenichnus'
- 'Selenichnus falcatus belongs to Selenichnus'
- 'Shepardia palmipes belongs to Shepardia'
- 'Stenodactylus curvatus belongs to Stenodactylus'
- 'Tarsodactylus caudatus belongs to Tarsodactylus'
- 'Tarsodactylus expansus belongs to Tarsodactylus'
- 'Toxichnus inaequalis belongs to Toxichnus'
- 'Triaenopus leptodactylus belongs to Triaenopus'
- 'Tridentipes insignis belongs to Tridentipes'
- 'Tridentipes uncus belongs to Tridentipes'
- 'Trihamus elegans belongs to Trihamus'
- 'Trisulcus laqueatus belongs to Trisulcus'
- 'Typopus gracilis belongs to Typopus'
- 'Xiphopeza triplex belongs to Xiphopeza'