Baron F. Huene — Age of Reptilia, Magneaian Conglomerate. 99 



II. — On the Age. op the Reptile Faunas contained in the Magnesian 

 Conglomerate at Bristol and in the Elgin Sandstone. 



By Feiedrich Baron Huexe, D.Su., Tiibingeu, Germany. 



4 CCORDIjSrG to Etheridge (Quart. Journ. Geol. Soc, vol. xxvi, 

 j\_ 1870, pp. 174-192) the Magnesian Conglomerate at Bristol is of 

 the same age as the German Muschelkalk, but Moore (Quart. Journ. 

 Geol. Soc, vol. xxxvii, 1881, pp. 67-82) was of opinion that it was 

 Ilhsetic. Since that time no special paper on the subject has been 

 published, but now the present writer has been able to find some new 

 evidence. 



The reptilian remains of the Magnesian Conglomerate comprise 

 four species — 



Thecodontosaurus antiquus, Morris. 



T. cylindrodon, Eiley & Stutchbury. 



Falaosaurus platyodon, Riley & Stutchbury. 



Rileyabrisiolensis, Huene. 



Thecodontosaiirus antiquus and T. cylindrodon are very primitive 

 theropodous dinosaurs (see Seeley, Ann. Mag. Nat. Hist., vol. xv, 

 1895, pp. 102-132, and Huene, Zeitschr. d. deutsch. geol. Ges., 

 1895, p. 349). A full description will soon appear in Huene, "Die 

 Dinosaurier der europaischen Triasformation " (Pal. u. geol. Abh., 

 suppl. Bd., G. Fischer, Jena). The tooth of Palceomurus platyodon 

 belongs probably to a Phy tosaur. The name Palmosaurus is preoccupied 

 by Geotfrey, 1831. The bones of Rileya iristolensis (Huene, Pal. 

 u. geol. Abh., vol. vi (x), 1902, pp. 62-63) belong to a Phytosaur too, 

 Now it seems to the writer not impossible that they came from the 

 same animal, so that the tooth, if that be the case, should be named 

 Biley a platyodon, R. & St., sp. 



The small tooth figured by Murchison & Strickland, 1837 (Trans, 

 Geol, Soc, vol. V, pi. xxviii, fig. la), is Thecodontosaurus antiquus ; and 

 the writer found a short time ago in the Warwick Museum that vertebrae 

 figured by Huxley (Quart. Journ. Geol, Soc, vol. xxvi, 1870, pi. iii, 

 fig. 9) and Owen (Trans. Geol. Soc, vol. vi, 1842, pi. xlv), and some 

 other bones from the Lower Keuper Sandstone of Coton End Quarry, 

 near Warwick, belong to the same species. Moreover, the tooth of 

 Thecodontosaurus cylindrodon figured by Huxley (Quart. Journ. Geol. 

 Soc, vol. xxvi, 1870, pi. iii, fig. 4), and another one figured by Owen 

 (Trans. Geol. Soc, vol. v, 1837 (1840), pi. xxiii, fig. 9), also from 

 Coton End, really belong to that species. And as T. antiquus and 

 T. cylindrodon occur in the Magnesian Conglomerate and in the Lower 

 Keuper Sandstone both strata must be of the same age. 



Concerning the Elgin Sandstone, the writer at first (Pal. u. geol. 

 Abh., vol. vi (x), 1902, p. 74) divided it into the Permian Elginia- 

 sandstone (Cuttie's Hillock) and the Triassic Steganolepis-'&d.'aA&ton.Q 

 (Lossiemouth, Spymie, and Firdi'assie), according to their respective 

 faunas. Two years later Boulenger adopted the same classification 

 (Proc Zool. Soc, 1904, vol. i, pt. 2, pp. 470-487) and applied the term 

 G^or^^owi^;- sandstone to the Permian beds. The only reptile of the 

 8teganolepis-%2,vA?XonQ occurring also elsewhere is Syperodapedon 

 Gordoni, Huxley. It is one of the characteristic fossils of the Lower 



