116 



COELENTEEATA— ANTHOZOA 



PHYLUM II 



tudiual striae or ridges ; mural pores irregularly distributed ; tabulae very 

 uumerous, oblique or curved, incompletely developed, and usually filling 

 the visceral chamber with loose vesicular tissue. Devonian and Carboniferous. 

 M. favosa de Kon., extraordinarily profuse in the Lower Carboniferous Lime- 



stone of Belgium. 



Family 2. Auloporidae Nicholson (Tuhulosa Milne Edwards and Haime). 



Creeping, branching or reticulated tuhula-r coralla, composed of cylindrical, leaker 

 or trumpet-shaped corallites, with thick, imperforate, wrinkled walls. Septa repre- 

 sented by faint marginal striae ; tabulae moderately numerous 

 or wanting. Reproduction by basal or lateral gemmation. 

 Ordovician to Carboniferous. 



Aulopora Goldf. (Fig. 182). All the corallites of the 

 prostrate corallum are attached by the whole of the lower 

 surface to some foreign object {Alveolites, other corals, or 

 mollusks). Tabulae more or less curved ; reproduction by 

 basal gemmation. Ordovician to Carboniferous. 



Cladochonus M'Coy {Pyrgia E. and H.). Corallum 

 branching, attached only at isolated points, and composed 

 of funnel-shaped corallites without tabulae and septa. 

 Reproduction by lateral gemmation. Carboniferous. 



B.omingeria Nich. {Quenstedtia Rom.). Spreading, 

 semi-erect, bushy coralla, only basally attached, and with 

 , , , . cylindrical corallites increasing by lateral gemmation. 

 Goldf. Devonian ; Geroi- Tabulae moderately numerous, horizontal. fSilurian and 



stein, Eifel. Natural size -px 



(after Goldfuss). JJeVOniaU. 



Fig. 182. 



Family 3. Syringoporidae Milne Edwards and Haime, 



• 



Fasciculate coralla composed of cylindrical corallites, united at intervals along the 

 sides by hollow connecting processes or by horizontal expansions. Walls thick, 

 wrinkled; septa faintly developed, represented by delicate 

 ridges or longitudinal rows of spinules ; tabulae numerously 

 developed, usually irregularly funnel-shaped. Reproduction 

 by basal gemmation or by buds arising from the connecting 

 processes and horizontal expansions. Ordovician to Car- 

 boniferous ; maximum in Devonian and Carboniferous. 



Syringopora Goldf. (Fig. 183). Fasciculate coralla, 

 often attaining considerable size, and composed of 

 cylindrical, thin-walled, somewhat flexuose corallites ; 

 the latter communicate by means of hollow, cylindrical, 

 connecting processes. Septa rudimentary ; tabulae 

 funnel-shaped. Corallum commencing with prostrate c^tnSfs^lJ^s^onfi 

 basal zooids similar to Aulopora. Numerous species Regnitzicsaii, Fichteigebnge. 



P d-i • J i^ 1 •(• Natural size. 



ranging from Silurian to Carboniferous. 



Chonostegites E. and H. Corallum massive ; cylindrical corallites connected 

 by horizontal, hollow, laminar expansions into which the endothecal tissues are 

 directly continued ; tabulae oblique, cystoid. Devonian. 



