NORTH AMERICAN EARLY TERTIARY BRYOZOA. 



629 



Genotype. Orbitulipom haidingeri Stoliczka, 1861. 

 Range. Auversian Tortonian. 



Orbitulipora petiolus Lonsdalc, 1850, Orlntulipora lenticular^ Reuss, 1867, and 

 Orbitulipora excentrica Se- 

 guenza, 1880, are the only 

 known species in addition to 

 the genotype. 



Genus BATOPORA Reuss, 1867. 

 ISO". Butopora REUSS, Ueber 

 einige Bryozoen aus 

 dera deutschen Un- 

 teroligocan Sit- A 



zun.ssbericlite der FIG. 190. Genus Batopora Reuss, 1867. 



k. Akadeinie der A-C. Batopora rosula Reuss, 1867. Frontal, dorsal, and lateral 

 Wissensch a f t e n , views of a zoarium, magnified. (After Reuss, 1867.) 

 Wien, Abth. ], p. 16. 



The apertura is orbicular. The frontal is a granular olocyst. The zoarium is 



conical, never hollow. The 

 ancestrular zooecium is 

 ornamented with radicu- 

 lar pores. 



Genotype. Batopora 

 stolicskai Reuss, 1867. 



Range. Lutetian, 

 Tortonian. 



The species of this 

 genus are : 



Batopora stolicskai 

 Reuss, 1867. Latdorfian. 



Batopora scrobifulnto 

 Koschinsky, 1885. Lu- 

 tetian. 



Batopora conica Se- 

 guenza, 1880. Tongrian. 



B at op or a conica 



A C B 



FIG. 191. Genus Diplota.ris Reuss, 1867. 



A-E. Diplotaxis placcnttila Reuss, 1867. Various views of the 

 zoarium magnified. (After Reuss, 1867.) 



(according to 

 1887). Pria- 



H a nt ken 

 Pergens, 

 bonian. 



Batopora rrvilt!r<i<li- 

 ata Reuss, 1869. Tortonian. 

 Genus DIPLOTAXIS Reuss, 1867. 



1807. Diplotaxis REUSS, Ceber einige Bryozoen aus dem dentsclien Unteroligocan, Slt- 



zungsberichte der k. Akademie der AVissenscliaften, Wien, Abth. 1, p. 16. 

 The zoarium is discoidal and formed of two lamellae, back to back. The 

 zooecia of the external face are oriented toward the zoarial margins; the zooecia 

 of the inner face are oriented toward the center. The apertura has a distal rimule. 

 Genotype. Diplotaxi* plnccritnla Reuss. 1867. Latdorfian. 



