120 



THE EXTINCT BATRAC1I1A, KEPT1LIA 



AUBLYSODON, Leidy. 

 Dinodon, Leidy (not of Dumuril & Bibron) Proc. Ac. N. Sci., Phila., 1857. Aublyiodon, Leidy, 1. c. 1808. 



This genus differs in its dentition from Laelaps and Megalosaurus ; the teeth present 

 a, posterior plane whose margins are more or less denticulate, in place of the acute crenate 

 margin of the former. None of its bones are known. 



ATTBLYSODON HORRIDUS. 



A. mirandus, Leidy 1. c. 18<!8, 298. Dinodon horridus, Leidy, Trans. Amer. Philos. Soc, xi. 1800, p. 140, Tab. 



Upper Jurassic Bad lands of the Judith River, Nebraska. 



TROODON, Leidy. f 



TROODON FORMOSLTS, Leidy. 

 Trans. Amer. Phil. Soc, 1860, 117. 

 Upper Jurassic bad lands of Judith River, Nebraska. • 



SYMPHYPODA. 



hirst series of tarsal bones confluent with each other, and with the tibia.* Fibula 

 distally much reduced. Anterior part of ilium dilated, plate-like. 



Genera Oxnithotarsus, Cope. Compsognathus ; Wagner Abhandl. Mathem. Nat. 

 Classe Miinchen Bd. IX. 



The latter, says Gegenbaur, is the form among terrestrial Saurians nearest the birds, 

 as Archaeopteryx is the avine type nearest the Saurians. From the upper Jurassic slates 

 of Solenhofen. 1 add a few of its characters from Wagner. 



Inner toe represented by a rudimental metatarsus. Whole foot a little Larger than 

 lemur; humerus one-half femur. Of the only known species, C. gracilis, Wagner gives 

 the following measurements: Length of head, 2" &'" (French) ; of vertical column to 

 opposite; acetabulum, 10"; of anterior extremity, 4" 7" ; of posterior, 9" 3'". 



O UNIT 1 1 OTARSUS, Cope. 



Dr. Samuel Lockwood of Keyport, Monmouth county, New Jersey, discovered in a 

 (day bank on th<; shore of Raritan Bay, a remarkable fragment of a, gigantic Dinosaur. 



* As first pointed out by Prof. Gegenbaur, Beitr. z. Vergleich Anatomie Wirbelthiere ; CarpuaU. Tarsus. \m . 

 t The following genus and species may belong among the Qoniopoda. Leidy includes it among Ids cretaceous 

 Reptilia, but adds that it may be a fish. 



DIPLOTOMODOK, Leidy. 

 Tomodon, Leidy, not of Dumfiril and Bibron. Proceedings A. N. Sci, Phila.., 1838, p. 

 Diplotomodoh KOBEiFiCTJs, Leidy, Cretaceous Reptiles, 102, Tab. Known from a single tooth. 

 Cretaceous green sand of New Jersey. 



