GDC Systematic Paleontology — Upper Devonian 



Occurrence. — ^Jennings Formation, Genesee Member. Such fossils 

 are widely distributed and are recorded from the vicinity of Cumberland 

 and near Wolfe Mill ; 1/2 mile west of Corriganville. Woodmont Member, 

 Naples Fauna. Polish Mountain section at Gilpintown, Parker farm, 

 514 miles west of Burlington, West Virginia. 



Collection. — ^Maryland Geological Survey. 



Suborder EURYCAMPYLI 

 Family MAGNOSELLARIDAE 



Genus TORNOCERAS Hyatt 



ToRNOCEEAS UNIANGULARE (Conrad) 



Plate LXXII, Fig. 6 



Goniatites uniangulare Conrad, 1842, Jour. Acad. Nat Sci., Phila., voL viii, 



p. 268, pi. xvi, fig. 4. 

 Goniatites discoideus Hall, 1879, Pal. of N. Y., vol. v, pt. ii, pi. Ixxi, figs. 



1, 7, 10-13. 

 Goniatites uniangularis. Hall, 1879, Ibid., pi. Ixxi, fig. 14; pi. Ixxii, figs. 



6, 7; pi. Ixxiv, fig. 2. 

 Goniatites discoideus Hall, 1888, Ihid., Suppl. (=vol. vii), p. 127, figs. 11, 12. 

 Tornoceras uniangulare Clarke, 1898, 16th Rept. State GeoL, N. Y., p. Ill, 



pi. viii, figs. 15-18. 



Description. — Shell depressed, suborbicular, discoid, witli rounded 

 center; sides gently convex. Volutions at maturity all embraced within 

 the outer one, though in early stages slight umbilication is evident; sur- 

 face smooth. Body chamber one-half to two-thirds the outer volution ; 

 air chambers numerous; septal sutures quite simple, with broad lateral 

 saddles, lateral lobes with an abrupt slope on the umbilicate side and a 

 narrow and acute ventral lobe. 



The specimens which have been observed in the Maryland shales are 

 badly flattened but serve to show the highly involute, non-umbilicate 

 character of the shell, and one preserves the outline of the septal sutures. 

 For better drawings than it is practicable to give here the reader is re- 

 ferred to the works cited above. The species may be distinguished from 



