BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 985 



PLATYCERAS Continued. 



Acroculia Phillips, Pal. Foss. Cornwall, Devon and W. Somerset, 1841, p. 93. 

 Hall, 12th Rep. New York State Cab. Nat. Hist., 1859, p. 77. (Ehlert, Bull. 

 Soc. Geol. France, 3d ser., 11, 1883, p. 602. 



Platyceras angulatum (Hall). 



Acroculia angulata Hall, Pal. New York, 2, 1852, p. 289, pi. 60, figs. 4a-d. 

 Platyceras angulatum Grabau, Bull. Buffalo Soc. Nat. Sci., 7, 1901, p. 211, fig. 



140; Bull. New York State Mus., 45, 1901, p. 211, fig. 140. 

 Clinton (Rochester): Lockport, New York. 



PLATYCERAS BROWNSPORTENSIS Foerste. See Diaphorostoma brownsportense. 



PLATYCERAS CAMPANULATUM Winchell and Marcy. See Diaphorostoma campanu- 

 latum. 



Platyceras? columbianum Weller. 



Platyceras? columbiana Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 131, 



pi. 4, figs. 7, 8. 

 Canadian (Beekmantown): Columbia, New Jersey. 



Platyceras compactum Whiteaves. 



Platyceras compactum Whiteaves, Geol. Surv. Canada, Ann. Rep., n. s., 14, 



App. F, 1904, p. 52; Geol. Surv. Canada, Pal. Foss., 3, pt. 4, 1906, p. 260, 



pi. 29, fig. 6. 

 Niagaran: Ekwan River, Canada. 



PLATYCERAS (DIAPHOROSTOMA) CORNUTUM Hisinger. See Diaphorostoma niagarense. 



Platyceras depressum Ulrich and Scofield. 



Platyceras depressum Ulrich and Scofield, Geol. Minnesota, 3, pt. 2, 1897, p. 



1069, pi. 61, figs. 55, 56. 



Black River (Decorah): Six miles south of Cannon Falls, Minnesota. 

 Holotype.Csit. No. 45954, U.S.N.M. 



Platyceras ellesmerelandi Holtedahl. 



Platyceras ellesmerelandi Holtedahl, 2d Arct. Exp. "Fram," 1898-1902, No. 32, 



1914, p. 32, pi. 8, fig. 20. 

 Helderbergia,n (Lower beds): Southwestern Ellesmereland, Arctic America. 



PLATYCERAS HOYTI Walcott. See Pelagiella hoyti. 



Platyceras laciniosum Ringueberg. 



Platyceras laciniosum Ringueberg, Buffalo Soc. Nat. Hist., 5, 1886, p. 14, pi. 2, 



fig. 1. 

 Clinton (Rochester): Lockport, New York. 



Platyceras? membranaceum Ringueberg. 



Platyceras membranaceum Ringueberg, Buffalo Soc. Nat. Hist., Bull. 5, 1886, 



p. 15, pi. 2, fig. 3. 

 Clinton (Rochester): Lockport, New York. 



PLATYCERAS MINUTISSIMUM Walcott. See Pelagiella minutissima. 



Platyceras naticoides Etheridge. 



Platyceras naticoides Etheridge, Quart. Jour. Geol. Soc. London, 34, 1878, p. 603, 



pi. 27, figs. 4, 4a. 

 Niagaran: Bessels Bay, Arctic America. 



