57 



a. Slab with carapace, imperfect anteriorly. 



b. Slab with plastron. 



CLASS AMPHIBIA. 

 ORDER LABYRINTHODONTIA. 



FAMILY MASTODONSAURID.E. 

 TREMA TOSA UR US BRA UNI. 

 Burmeister, Labyrinth, bunt. Sandst., p. 69 (1849). 

 a. The imperfect skull in matrix; from the Bunter Trias of 

 Bernburg, Germany. 



FAMILY ANTHRACOSAURIDiE. 



* LOXOMMA ALLMANI. 

 Huxley, Quart. Journ. Geol. Soc, vol. XVIII, p. 293 (1862). 



a. Cast of the skull. Original in British Museum (No. E. 385); 

 from the Coal Measures of Dawley, near Coalbrookdale, Shrop- 

 shire. 



b. A flattened skull; from the Coal Measures of Jarrow Colliery, 

 County Kilkenny. This specimen shows very distinctly the 

 enormous orbits characteristic of the genus, and is the first record- 

 ed example from these deposits; it is noticed by Baily in the 

 •Rep. Brit. Assoc.,' 1883, p. 497, as Anthracosaurus. 



Geological Survey Collection. 



* ANTHRACOSAURUS R US SELL/. 



Huxley, Quart. Journ. Geol. Soc, vol. XIX, p. 56 (1863). 



Anthracosaurus edgei, Baily, Rep. Brit. Assoc, 1878, p. 530. 

 a. Slab of shale with an imperfect skeleton probably referable 

 to this genus and species; from the Coal Measures of Jarrow 

 Colliery, County Kilkenny. The skull appears to have the small 

 orbits characteristic of Anthracosaurus, and the mandible seems 

 to have the great depth distinguishing Anthracosaurus from 

 Loxomma. Noticed by Baily in the 'Rep. Brit. Assoc.,' 1878, 

 p. 530, as the type of A. edgei. Geological Survey Collection. 



