MEDLicoTTiNAE Karpinsky 



Medlicottia Waagen 



The genus Medlicottia has been estabHshed by Waagen for a num- 

 ber of involute discoidal species with a median furrow on the venter, 

 but later on it was shown that several forms included should be 

 separated and belonged in reality to other genera. Waagen^ originally 



(1879) described Goniatites primas, his type for Medlicottia, as 

 Sageceras primas, and introduced the new genus Medlicottia later 



(1880) in a supplement^ without giving a real diagnose of the genus. 

 He included in it the following species : 



Medlicottia Orbignyana Verneuil. 



Medlicottia artiensis Gruenewaldt. 



Medlicottia primas Waagen. 



Medlicottia sakmarae Karpinsky. 



Medlicottia Wynnei Waagen. 

 In 1888 Gemmellaro described a number of new species belonging 

 to Medlicottia, the existence of which forms, in loose blocks of the 

 Sicilian Permian, had been proven already in 1882 by Mojsisovics. 

 At the same time Gemmellaro^ established his new genus Propinaco- 

 ceras and expressed the opinion that the so called Medlicottia sak- 

 marae probably belonged to this new genus. 



Nearly at the same time (1889) Karpinsky^ published the first 

 detailed study of the genus Medlicottia, separating from it Propin- 

 acoceras sakmarae. He distinguishes three different groups ; that of 

 M. Grbignyana, including M. Trautscholdi Gemm., M. primas Waag., 

 M. Verneuili Gemm., M. Marconi Gemm., and M. bifrons Gemm. ; 

 that of M. Wynnei Waag., including only this species; and that of 

 M. artiensis Gruenew., including M. indeterm. Karp., and M. Karp- 

 inskyana Krotow. He regards M. Schopeni Gemm. as a form of pas- 

 sage from the third group to Propinacoceras. 



Karpinsky also is the first one to show the development of the suture 

 in Medlicottia. He is able to show that the septa pass from the Iher- 



'Waagen, Productus limestone fossils, I, p. 39. 

 'Waagen, loc. cit, p. 83. 

 "Gemmellaro, Calc. c. Fusulina, p. 53. 

 ♦Karpinsky, Amm. d. Artinsk-Stufe, p. 21-26, 41, 45. 



