FOSSIL FOOTPRINTS OF THE JURA-TRIAS. 



465 



B. In Europe. 



1. Tridactyls in Shropshire and Cheshire. 



2. Tridactyls in Saxony. 



In 1845, Hitchcock ('45b) published a new series of names, those of the animals that 

 made the tracks and not of the tracks themselves. This nomenclature was succeeded 

 later by another, as Hitchcock considered that he had a right to change his published 

 names at will. Following the usage of Hay in his BibUography and catalogue of the 

 fossil Vertebrata of North America (:02), this paper of 1845 is taken as the basis of the 

 true nomenclature of the ichnites, all subsequent names being considered as synonyms 

 and the old track names disregarded. The classification of 1845 is as follows: — 



1. Eubrontes. 5 species. 



2. Fulicopus. 2 species. 



3. Sauropus. 1 species. 



I. Strutiiionoidae. 

 (Ornithoidichnites.) 



IT. Pteropodidae. 

 (Ornithoidichnites.) 



III. Pentedactylidae. 

 ( Sauroidichuites. ) 



IV. Tetradactylidae. 



4. Polemarchus. 1 species. (Sauroidichuites.) 



5. Plectropus. 2 species. 



6. Harpedactylus. 1 species. 



7. Ancyropus. 2 species. 



1 species. 

 4 species. (Ornithoidichnites.) 



2 species. (Sauroidichuites.) 



8. Palamopus. 



9. Sillimanius. 



10. Triaenopus. 



a 



11. Steropoides. 



12. Argoides. 



13. Platyptenia. 



14. Calopus. 



15. Typopus. 



16. Batrachopus. 



V. Tridactylidae. 



3 species. (Ornithoidichnites.) 



4 species. 

 3 species. 

 1 species. 



1 species. (Sauroidichuites.) 



2 species. (Batrachoidichnites. 



a 



