ART. 12 CLASSIFICATION OF CONODONTS ULEICH AND BASSLER 17 



Fig. 4.— FRIONIODINIDAE, new family 



1,2. Genus Cornuramia Smith, 1907. (1) Genotype Cornuramia monodonta 

 Smith, 1907. (2) Cornuramia cUplodonta Smith, 1907. Both from 

 the Ordovician (Arenig-Llandeilo), Ravengill, Scotland. 



3. Genus Ilindeodclla, new genus. Genotype HindcodelUi suhtiUs, new 



species, X 20. Base of Mississippian (Hardin sandstone). Mount 

 Pleasant, Tenn. 



4. Genus Pachysomia Smith, 1907. Genotype Pachysomia tvanlockensis 



Smith, 1907. Ordovician (Arenig-Llandeilo), Wanlock Water, Scot- 

 land. 



5-7. Genus Lonchodina, new genus. Genotype. Lotichodina typlcalis, new 

 species. Views of opposite sides of teeth and of the under surface of 

 bar illustrating curvature, X 20. Upper Devonian (Rhinostreet shale 

 of Portage), Shaleton, N. Y. 



8, 9. Genus Prioniodina, new genus. Genotype, Prioniodina subcurvata, 

 nev/ species, X 20. Teeth viewed from opposite sides. Upper Devon- 

 ian (Rhinestreet shale of Portage), Shaleton, N. Y. 

 10. Genus Prioniodella, new genus. Genotype, Priomodella normalis, new 

 species, X 20. Upper Devonian (Rhinestreet shale of Portage). 

 Shaleton, N. Y. 

 11-13. Genus Brijantodus, new genus. (11, 12) Genotype, Bryantodus typicus, 

 new species, X 20, Upper Devonian (Rhinestreet shale of Portage), 

 Shaleton, N. Y. (13) Bryantodus nclsoni. new species, X 20. an aber- 

 rant species of the genus. Mississippian (Hardin sandstone at base 

 of Chattanooga shale). Mount Pleasant, Tenn. 



14. Genus Euprioniodina, new genus. Genotype Euprioniodina dcfleda, 



new species, X 20. Upper Devonian (Rhinestreet shale of Portage), 

 Shaleton, N. Y. 



15. Genus Hibbardella, new genus. Genotype, Hibbardella angulata Hiude, 



1S79, X 20. Upper Devonian (Rhinestreet shale of Portage), Shale- 

 ton, N. Y. 



16. Genus Lonchodus Pander, 1856. (Centrodus Pander, 1856, preoccu- 



pied.) Genotype, Lonchodus {Centrodus) simplex Pander, 1856. 

 Carboniferous of Russia. 



17. Genus Valentia Smith, 1907. Genotype, Valentia morrochensis Smith, 



1907. Ordovician (Arenig-Llandeilo), Morroch Bay, Scotland. 

 18-19. Genus Prionoynathus Pander, 1856. Views of opposite sides of the 

 genotype Prionognathus hrandtii Pander, 1856. Silurian, Island of 

 Oesel. Probably not a conodont. 



20. Genus Palmatodella new genus. Genotype, Palmatodella delicatula, new 



species, X 20. MissLssippian (Chattanooga shale), 13 miles east of 

 north of Huntsville, Ala. 



21. Genus Diplododella, new genus. Genotype, Diplododella bilateralis, new 



species, X 20. Mississippian (Chattanooga shale), 13 miles east of 

 north of Huntsville, Ala. 



22. Genus Bynprioniodina, new genus. Synprioniodina altcrnata, new 



species, X 20. Mississippian (Chattanooga shale), 13 miles east of 

 north of Huntsville, Ala. 

 60728—26 3 



