204 BESCEIPTIVE caxalogue 



of L. iuronicum, as might at first be imagined from the external 

 similaritj . 



HoKlzoN. — Turonian. 



Locality. — Beausset, Var, France. 



Type. — Pateoiitological Museum, Old Acadera}-, Munich. 



Lithothamnium gosaviense, Rothpletz. 



1891. Lithothamnium gosaviense, Kothpletz, Zeitschr. deutsch. geol. 

 Ges., vol. 43, p. 315, pi. xvii, fig. 3. 



An encrusting form, talking on the shape of the object it 

 covers; the upper surface branching or warty. The cells are 



Text-fig. 20. — Lithothamuinm r/osavicnse, Kothpletz. Section sbowing 

 several tetraspore zones in the tissue. X 30. After Rotlipletz. 



9-12 ft wide and 9-12 ^t high, but in the hypothallium up to 

 25 ji long. The tetraspores are 30-40 ^u wide ahd 50-70 /i high. 

 Tetraspores are developed onco the perithallium reaches a 

 thickness of 300 ^. 



HoEizoN. — Senonian. 



LociLiir. — Gosau and Martigncs, fairly common. 



Type. — Palceontologioal Museum, Old Academv, Munich. 



