Avic. 



70 



south of Ooye station in Hopewell township, T3, p. 158. They 



abound also in company with Ooniatites complanatus ia the 



Genesee, No. 18 of Patterson section, T3, 184. VIII e, VIII f. 



Avicula spinigera. See Pteronites spinigerus. VIII g. 



Avicula subplana. Rogers, page 823, fig. 628. (Hall, Pal. 



JM. Y., Vol. II, 1852,) Va, Clinton forma- 

 tion in Pennsylvania, F J, Niagara forma- 

 tion in New York. This is one of the 

 prettiest and commonest shells of the fossil 

 ^ ore shales ; and it is sometimes seen in the 

 628 ore itself. — Vh. 

 Avicula textilis, var. arenaria. Hall, III, pi. 110, f . 2.— 00, 

 Pal. coll., p. 233, spec. 702-12, an impression; spec. 702-14, 

 doubtful. (G. B. Simpson), from southern end of Royers' ridge, 

 near Orbisonia. Huntingdon Co. Ashburner and Hall, from 

 Oriskany sandstone^ VII 

 Avicula trentonesnsis, (Conrad, Jour. Acad. Nat. Sci., 



Philadelphia, Vol. 8, 1842, Trenton group.) 

 Emmons, Amer. Geol. Vol. 1, part 2, 1855, page 

 176, plate 13, figs. 28, 29, 30. Intersecting 

 rays and circles make a sunken panneled 

 surface to the shell. — Trentonlime stone at 

 (Em.A:&.i855^ iiiKIUPi^J^ ,3 Middleville and Water town, N. Y. — II c, 

 Avicula tricostata. (See lyriopecten tricostata), Van- 



uxem, page 179, fig. 48, 1, 

 Chemung formation^ VIII g. 

 In Pennsylvania, Columbia 

 Co., Orangetown, it abounds 

 in Chemung strata 50' to 100' 

 above the Stony Brook beds. 

 (jr7, p. 73 ; also at top of the 

 Chemung formation on Fied- 

 ler's creek, L. Mahanoy t., 

 Northumberland Co., and in 

 Va.n*48Tf!^^^^liiMI^^^ Upper Chemung bed 25 of 



section 96, G7, pp. 366, 367.— VIII g. 



Avicula triquetra. Hall, page 137, fig. 54, 7. V, c. Salina 



v.c-,,,. (or Onondaga) formation. At W. Comp's mill, 2-^ 



^^^S miles south-east of New Bloomfield, Perry Co., Pa. 



5*4- .^•^ 7 Report 000, catalogue of Claypole's collections, 



specimens labeled 2-9, 10-21. Hamilton upper shale. VIII c. 



