Fiskerester fra den devoniske sandsten paa Norges vestkyst. 17 



granting the existence of these fishes, it naturally follows that there 

 must have been a fairly rich plant and animal life of various kinds 

 for their maintenance. Nathorst is of the opinion that several of 

 the plants found may have been aquatic, as for instance Thurso- 

 phyton, certain forms of Aphylopteris and possibly also the remark- 

 able forms Hyenia and Barrandeinea ; on the other hand Brøggeria 

 and Psygmophyllum were undoubtedly land plants. This too points 

 to a wealthy animal life in these lakes; we are, as yet, unacquainted 

 with any other of them than the fishes. We do know, however, 

 that the Scotch lakes were at times crowded with phyllopods 

 (Estheria), and that peculiar Phyllocarids and Gigantostraks 

 existed there. A similar animal life may also have thrived in our 

 Devonian lakes. In this connection, I will mention that cand. real. 

 Hope, who has made collections in the Hyen mountains for the 

 palaeontological museum in Kristiania, has found not only numerous 

 remains of plants but also tracks of a crustacean, probably a little 

 Eurytperide. It is to be hoped that further and closer examination 

 of these extensive Devonian regions, which are often difficult of 

 approach, will lead to the discovery of more and better preserved 

 fishes and other animal remains, so that in the course of time we 

 may get a richer and more complete picture of this exceedingly 

 interesting fauna. 



