DEVONIAN FAUNA. 



- - 3 Spirifera sp. ?. 



- li - Atrypa desquainata. 

 1 -! 3 Atrypa reticularis. 

 1 2 - Rbyuclioiu'lhi hoisfordi. 



- 3 Kliyiichoiuilla occideus. 



- 3 Khynchoiiella tethys. 



- 3 Peutaiuerus coiiiis. 



- 2 - Leipteria rafiiicsciiii. 



- 2 - Liuioptera sarmeutica. 



- 2 - Mytilarca sp. ?. 



- 2 - ]\Iodiom()rpba oblonga. 

 1 — Modiomorpha obtiisa. 



- 2 - Goniopbora ])eraugulata. 



- 2 3 Edmondia piiionensi.s. 



- .3 Sanguinolites combensis. 

 1 — SanguiiioHtes gracilis. 



- 2 - Sauguiiiolites saiiduskyensis. 1 



- 3 Conocardium nevadensis. 



- 2 - Posidomya dcvouica. 



- 2 - Posidomya Levis. 



- 2 - Microdon macrostriata. 



- 2 - Schizodus orbicularis. 



- 2 - Cyimcardinia iudenta. 



- 2 3 Platyeeras carinatuin. 



1-3 Platyeeras conradi. 



- 2 - Platyeeras deiitalium. 

 1 — Platyeeras tlietiforme. 



- 3 Platyeeras tbetis. 

 1 — Platyeeras uudulatuin. 

 1 - 3 Platyostoma lineata. 



- 2 - Eceuliompbalu.s devouicus. 

 -23 Euompbalus eurekensis. 



- 3 Calonema oeeideutalis. 



- 2 - Cycloiiema (like C. multilera). 



- 2 - Loxonema approxiinatuiii. 

 -23 Loxonema nobile. 



- 3 Loxonema subattenuata. 



- 2 - Bellerophon neleus. 

 12 3 Belleropbon perplexa. 



- 2 - Seoliostonia americana. 

 - Tentaculites attenuatus. 



- 3 Tentaculites scalarifonnis. 



- 2 - Hyolithes sp. !. 



- 2 - Ortboceras sp.!. 



- 3 Goniatites desideratus, 

 12 3 Pbacops rana. 

 12 3 Dalmanites meeki. 



- 3 Proetus margiualis. 



[No. 1, from tlm south s1o)ki of Brush Peak. No. 2, from the shale licit of Atrv))a Peak. No. 3, from 

 the west spur of Combs Mouutain.] 



The shale belt of" Brush Peak promises to the collector a most varied 

 fauna of Lower Devonian species. It measures about 150 feet in thickness 

 and may be traced along the west side of both Brush and Modoc peaks; 

 thence still farther northward, where its connection is clearly made out 

 with shale belt No. 3, of the Devonian section, south of Signal Peak. 

 On the southeast slope of Atrypa Peak the shale belt crosses the spur 

 striking N. 30° E., dipping 40° W. The beds are of a light bluish gray 

 color about 150 feet in thickness. The horizon corresponds to the fos- 

 siliferous .shale belt in the section east of Lamoureux Canyon (p. 67). 



Combs Mountain presents upon its south side a line display of massive 

 limestone beds dipping northward into the mountain. There is exposed 

 here between the base of the mountain and the summit of the ridj^e 



