98 ANTHOZOA 



living Zoantharian A Iveopora ; if it could be shown that 

 these two forms are related, then it would follow that 

 Favosites and other allied fossil genera (including Syringo- 

 pora) must be placed in the Zoantharia. Another view 

 of these Palaeozoic corals is that they do not belong to 

 either the Zoantharia or the Alcyonaria, but constitute 

 an isolated group of the Anthozoa. These genera are 

 characterized by their numerous and well-developed tabulae, 

 and by the septa being, in most cases, represented by 

 ridges or spines only. A few species which appear to be 

 allied to the Palaeozoic forms have been found in deposits 

 of Mesozoic age. 



Syringopora. Compound ; corallites tubular, for the most 

 part not in contact, more or less parallel to one another. The 

 interiors of the different corallites communicate by means of 

 horizontal connecting tubes. Septa feebly developed, generally 

 represented by spines. Tabulae numerous, more or less funnel-shaped. 

 Budding basal. Llandovery to Carboniferous Limestone. Ex. S. 

 reticulata. Carboniferous. 



Syringopora agrees with Tubipora (fig. 38) in consisting of 

 parallel, cylindrical corallites, which have funnel-shaped tabulae, and 

 in its basal-budding ; it differs from Tubipora in having much 

 thicker walls which are not composed of spicules, and are not per- 

 forated by minute canals ; also in the tabulae being much less regular 

 in form and position, and in possessing septa in the form of spines. 

 The platforms of Tubipora (which are traversed by canals opening 

 into the corallites) are represented by the connecting tubes of 

 Syringopora ; in one species of Syringopora (S. tabulata) the 

 resemblance is particularly close, since the connecting tubes are given 

 off from the corallites at definite levels in a radiating manner. 

 On the other hand it must be noted that ITeterocosnia provincialis, 

 an Aporose coral from the Chalk, closely resembles Tubipora in its 

 general build. 



Favosites. Compound, massive, sometimes branched. Coral- 

 lites long and polygonal ; the walls are in contact but not fused, and 

 are perforated by pores ('mural pores') arranged in rows along each 



