﻿Jfi 6IREN0IDEI. 



Mus. Teyler, vol. v. (1880), p. 141, pi. ix. See K. A. von Zittel, 

 Sitzungsb. k. bay. Akad., math.-phys. CI. 1886, p. 259. 



Dental plates, said to be identical with those of the recent Cera- 

 toclus forsteri 1 , occur in the superficial Alluvial Deposits of Darling 

 Downs, Queensland. One of these is noticed in ' Xature,' vol. ix 

 (1S74), p. 293, under the name of C. palmeri, KrefTt. The follow- 

 ing is a cast of the same : — 



45868. Plaster cast of imperfect upper dental plate, having only 

 three sharply compressed horns preserved; Alluvial Deposit, 

 Darling Downs, Queensland. 



Presented by Dr. A. Giinther, 1872. 



The following species have also been founded upon detached 

 dental plates, but there are no examples in the Collection : — 



Ceratodus arenaceus, F. A. Quenstedt, Handb. Petrefakt. 3rd edit. 



(1883), p. 296, pi. xxiv. fig. 3.— Upper Bunter ; Suldorf, 



near Magdeburg. [Tubingen University Museum.] 

 Ceratodus concinnus, T. Plieninger, in Meyer & Plieninger's Pal. 



Wiirttembergs (1844), p. 85, pi. xi. fig. 9. — Keuper ; 



Stuttgart. [Stuttgart Museum.] 

 Ceratodus cornutus, F. A. Quenstedt, Handb. Petrefakt. 3rd. edit. 



(1883), p. 297, pi. xxiii. fig. 39.— Upper Muschelkalk ; 



"Wilhelmsgliick. [Tubingen University Museum.] 

 Ceratodus favosus, E. D. Cope, Proc. Amer. Phil. Soc. 1884, p. 28. 



— Permian ; Texas. [E. D. Cope Collection, Philadelphia.] 

 Ceratodus gyjpsatus, F. A. Quenstedt, Begleitw. geogn. Specialk 



Wiirtt. Atlasbl. Hall (1880), p. 26 ; Handb. Petrefakt. 



3rd edit. (1883), p. 297, pi. xxiv. fig. 2.- Keuper ; Wiir- 



temberg. [Tubingen University Museum.] 

 Ceratodus margatus, F. A. Quenstedt, Begleitw. geogn. Specialk. 



Wiirtt. Atlasbl. Hall (1880), p. 23; Handb. Petrefakt, 



3rd edit. (1883), p. 297, pi. xxiv. fig. 1.— Keuper; Wiir- 



temberg. [Tubingen University Museum.] 

 Ceratodus serratus, L. Agassiz, Poiss. Foss. vol. iii. (1838), p. 135, 



pi. xix. fig. 18. — Keuper ; Aargau, Switzerland. [Identified 



with C. runcinatus by E. Beyrich, Zeitschr. deutsch. geol. 



Ges. vol. ii. (1850), p. 163.] 

 Ctratodus silesiacus, F. A. Uoemer, Geol. von Oberschlesien (1870), 



p. 184, pi. xv. figs. 6, 7. — Rhaetic (Breccia); Lissau, 



Silesia. [University of Breslau.] 

 Ceratodus virapa, T. Oldham, Mem. Geol. Surv. India, vol. i. 



1 C. W. De Vis, Proc. Roy. Soc. Queensland, vol. i. (1S84).. p. 40. 



