OL- cri:ta(_eous tlams. 245 



DasycLirlaceK, and may be considered as a form intermediate 

 between Ibe two groups. 



Triploporella Fraasi, Steinmann. 



1S80. TriplvporeVa Frnasi, Steiumann, Xeues Jalirb. f. Min., vol. 2, 



p. 13(1, ))1. V, tig's. 1-8. 

 1899. 'rriphij)iirdla I'raasi, Steinmann in Felix & Lenlc, Beiti-. 



Geol. l>al;eont. Mexico, pp. 190-19.";, text-figs. 29-10. 



A form with closely packed series of whorled branches bearing 

 spores, and with finely divided branches below and beyond 

 these. The whole stracturo probably about 30 mm. long, and 



Text-fig. {y.—Triplnporclla Fraasi, Steinmann. Portion of a radial section 

 of .some of tlie whorled branches, s, the axial stem. In the cavities 

 of tlie "branches" are the " mother spores" dividing into four. After 

 Steinmann. 



of a diameter of about 5 mm. at the distal, and 1-5-2 mm. at 

 the proximal end. 



From the calcareous specimens of Mexico further details were 

 obtainable, and the yerticilhite series of sporangial branches 

 contained " spores." 



The restoration of the plant given in Steinmann's second 

 paper, reproduced here in text-fig. 7 (p. 246), shows the vertical 

 axis and series of whorled branches, both spore-bearing and 

 divided. 



HoRizoJT. — Turonian and Cenomauian. 



LoCALiir. — Lebanon, Syria, and ilcxico 



