X ILLUSTRATIONS. 



19. Skull and Skeleton of Tuditanus punctulatus 87 



jo. Skull and Skeleton of Tuditanus longipc'S . . . go 



Ji. Skeleton nf Tuditanus vvalcotti: A, Body; B, Leg 94 



22. A. Outline of Skull and Cranial Elements of Erpelosaurus minutus Moodie, from the Cannelton Slates of 



Pennsylvania .... 99 



B. Outline of Skull and Cranial Elements of Erpetosaurus radialus Cope, from the Coal Measures of Linton 99 



C. Palate of Erpetosaurus (tabulatus?), from the Coal Measures of Linton, Ohio 99 



D. Outline of Skull and Cranial Elements of Erpetosaurus acutirostris Moodie, from the Coal Measures of 

 Linton, Ohio 99 



E. Outline of Larger Part of Skeleton of Odonterpeton triangularis Moodie, from the Coal Measures of 

 Linton, Ohio 99 



F. Right Mandible of Erpetosaurus tabulatus Cope, from the Linton, Ohio, Coal Measures 99 



G. Skull Elements and Lateral-line Canals of Erpetosaurus tabulatus Cope, from the Coal Measures of Linton 99 



23. Skull of Stegops divaricata 113 



24. Microsaurian Skulls from Linton, Ohio: A, Diceratosaurus lasvis; B, Diceratosaurus robustus 119 



25. Restoration of Eoserpeton 1 24 



26. Restoration of Amphibamus . 128 



27. Skeleton of Amphibamus grandiceps. ... 129 



28. Probable Appearance of Amphibamus. . . .130 



29. Skeleton of Cephalerpeton 133 



30. Restoration of Ptyonius. . 140 

 ;i Restoration of (Estocephalus .. . 144 

 3_?. Vertebrae of Molgophis brevicostatus . 14* 



33. Fore-limb of a Member of the Molgophida?, Possibly Pleuroptyx. ... .... 152 



34. A. Interclavicle of Sauropleura paueiradiata 159 



B. Left Clavicle of Sauropleura paueiradiata .. 159 



35. Skull and Skeleton of Saurerpeton latithorax. . i'. | 



3(1. Mandible of Leptophractus dentatus . 169 



37. So-called Interclavicle of Eury thorax sublsvis. . 170 



38. Skeletal Elements of Amblyodon 1/7 



39. Vertebra of Spondylerpeton spinatum . 179 



40. Mandible of Macrerpeton deani. . , . 184 

 4 i. Vertebrae of Eosaurus acadianus: A, Oblique Lateral Vu-w; U, Oblique View; C, Posterior View; D, Trans- 

 verse Section; E and F, Microscopic Sections . 188 



42. Skull and Mandible of Kol>;ii>hetes kansensis: A, Outer View of Mandible; B, Portion of Skull; C, Inner 



Surface of Mandible. . . .. 191 



43. Footprints ol Dromopus agili . ... 200 



