. Report upon the palaeontology of the province of Ontario [microform]. Paleontology; Paléontologie. l> layers, superimposed one upon the other, Corallites very minute, tubular, their circular call- ces slightly elevated above the general surface, and surrounded by a prominent margin. From three to five caliocs in the space of one line, separated by intervals of from half to two- thirds of their own width. Corallites, sometimes with the theca undivided, but more com- monly partitioned off by a few remotely placed horizontal tabulae. Camenchyma composed of exqpedingly minute tubuli, which ar
. Report upon the palaeontology of the province of Ontario [microform]. Paleontology; Paléontologie. l> layers, superimposed one upon the other, Corallites very minute, tubular, their circular call- ces slightly elevated above the general surface, and surrounded by a prominent margin. From three to five caliocs in the space of one line, separated by intervals of from half to two- thirds of their own width. Corallites, sometimes with the theca undivided, but more com- monly partitioned off by a few remotely placed horizontal tabulae. Camenchyma composed of exqpedingly minute tubuli, which are partitioned off by numerous close-set horizontal diaph- ragms. No traces of septa. The surface exhibits at intervals of about two lines elongated, star-shaped spaces, sometimes smooth, sometimes punctate or minutely pitted, which are not penetrated by tubes of any kind, and appear to be quite solid. There are generally from three to six corallitoa .surrounding these vacant spaces, which are larger than the others ; and the .spaces themselves have a long diameter of about a line or more, by a shorter diameter of half u line. In some specimens, also, the surface exhibits occasional large conical elevations pierced each by a single canal, the diameter of which is about a line, and which descends vertically into the mass. The cliaracters of Cdlhrpm-a incrdssafa are most remarkable, and I am not satisfied that two closely related species have not been included under the above description. That we have ^ , to deal here with a Tabulate coral allied to FisluUpora or Hdioliks is sutHciently clear ; but a there are many anomalous points presented b} the fossil. The specimens which I have included under this head occur in at least three forms. Some of them form thin crusts upon Heliophyl- lum Ilulli or Cystiphi/llum vesicnlosum, them- selves in turn supporting the tubes of Ortonw or Spirorbis, or the creeping Biohns of Anlopoi-a. Others form flattened or undulating expansions, and othe
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectpaleontology, bookyea
