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PROF. H. G. SEELET ON THE EEPTILE 



42. The Reptile Fauna of the Gosau formation preserved in the 

 Geological Museum of the University of Vienna. By Prof. 

 H. G. Seeley, F.R.S., F.G.S., &c, Professor of Geography in 

 King's College, London. With a Note on the Geological 

 Horizon of the Fossils at Neue Welt, west of Wiener Neustadt, 

 by Edw. Suess, Ph.D., F.M.G.S., &c, Professor of Geology in 

 the University of Yienna, &c. (Read June 8, 1881.) 



[Plates XXVII.-XXXL] 

 Contents. 



Introduction. 



Historical review ; condition of specimens. 

 Dinosauria. 



Dentary bone and teeth of Mochlodon Suessii (Biinzel). 



Skull of Struthiosaurus austriacus, Biinzel ; with a note on the base of the 



skull of Acanthopholis horridus, Huxley. 

 On the genus Cratc&omus, an armoured type with powerful fore limbs. 

 Mandibles and teeth, probably referable to Cratcsomus. 

 Cratcsomus Pawlowitschii, Seeley, vertebral column, ribs, dermal armour, 



scapula, humerus, femur, tibia. 

 Cratceomus lepidophorus, Seeley, coracoid, scapula, humerus, femur, tibia, 



fibula, metatarsal bone, claw-phalange, dorsal vertebra. 

 Tooth of Megalosaurus pannoniensis, Seeley. 

 Femur of Omithomerus gracilis, Seeley. 



Lower jaw and maxillary bone of Doratodon carcharidens (Biinzel). 



Femur and humerus of Bhadinosaitrus alcimus, Seeley. 



Scapula, humerus, and femur of Oligosaurus adelus, Seeley. 



Humerus, scapula, vertebrae, and armour of Hoplosaurus ischyrus (Seeley). 



Crocodilia. 



Vertebral column, femur, fibula, ulna, radius, &c. of Crocodilus proavus. 

 Chelonia. 



Costal plates, postfrontal bones, and scapula of Pleuropeltus Suessii, Seeley. 

 Costal plates and plastron of Emys Neumayri, Seeley. 



Lacertilia. 



Vertebra of ArcBOsaurus gracilis, Seeley. 

 Ornithosauria. 



Omithocheirus Bunzeli, Seeley. 



Introduction. 



Historical Review. 



The Gosau formation, nearly corresponding in age to the Upper Green- 

 sand of this country, is represented at ISTeue Welt, near Wiener Neu- 

 stadt, by freshwater deposits full of such freshwater shells as Melania 

 and Unio, and land-plants such as Banksia and PecopteHs. The for- 

 mation and its fauna have been described by Profs. Suess, Zittel, and 

 many others ; but, although the late Dr. Stoliczka detected a tooth 

 imbedded in the coal of the formation, no important knowledge was 

 obtained of the vertebrate fauna of the Gosau beds until Prof. Suess 



