• Ml E. M. Kindle — Faunal Succession in > the 



locality was made by Collier. Professor Sehuchert's report 

 on this fauna is as follows : 



"Loc. 45. Don River, 4 miles north of Tozier Creek. Mac- 

 lurina, probably M. manitobensis Whiteaves ; Columnaria with 

 small oorallites ; Halysites catenularia Liane; Syringopora sp. 

 andet. ; Streptelasma ? ; and an undetermined Lophospira"* 



This fauna was referred by Sclmcliert to the Ordovieian 

 although he was somewhat perplexed by the unusual associa- 

 tion of Halysites, Syringopora, and Maclurina in the same 

 fauna. The writer's collections have yielded a fauna of about 40 

 species from this locality, most of which are in an excellent 

 state of preservation. This comparatively large fauna gives a 

 much more adequate conception of the fauna than the original 

 collection and confirms the earlier determination of its Ordo- 

 vieian age. 



The fauna obtained by the writer from Don River was 

 collected from two sets of adjacent and closely similar beds 

 numbered 13a and l^b. Station 13a represents the beds 

 exposed in the sides of a short ravine heading on the slopes of 

 a mountain marked 1,242 feet on the mapf and joining Don 

 River nine miles from the coast. The fauna, unlike the earlier 

 faunules which have been described, is distributed through a 

 thickness of 300 feet or more of beds and includes a consid- 

 erable variety of fossils. Mr. E. O. UlrichJ has furnished the 

 following list of fossils from the limestone near the mouth of 

 this ravine : 



"Corals : 



Halysites gracilis var. 1, (? var. harti Etheridge). 

 " " " 2, with closer meshes. 



" " " 3, " very thick leaves. 



" " " 4, " clusters of 3-8 corallites at 



intersections. 

 Calapoecia canadensis var. Same in 1 3b and in upper Rich- 

 mond of Mississippi Valley. 



Beachiopoda : 



Strophornena trilobata (Owen) W. & S. 



" cf. scufieldi W. & S. 



Rafinesquina sp. undet. (small spines, possibly a Leptsena). 

 Leptaina n. sp. (Closely allied to one in beds of lower 



Mohawkian age in Minnesota). 

 Dinorthis cf. meedsi W. & S. 

 Hebertella borealis Billings? 



Rhynchotrerna increbescens Hall. (Small, new variety.) 

 " cf. sanctipaidi Sardeson. 



*Bull. TJ. S. Geol. Survey, No. 328, p. 75, 1908. 

 f Bull. U. S. Geol. Survey, No. 328. 1908. 

 i Letter to the writer, March 20, 1909. 



