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A monograph of the British fossil corals - kreidefossilien.de

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INTRODUCTION.<br />

hi<br />

but much shorter, and terminated by an obhque seraicu'cular or suljtriangular cahce, tlie<br />

edge <strong>of</strong> which projects on one si<strong>de</strong>.<br />

Typ. sp., Alveolites spongites, Steininger, Mem. <strong>de</strong> la Soc. Geol. <strong>de</strong> France, vol. i ; Calumopiji-a<br />

spengites, Goldfuss, Petref. Germ., pi. xxviii, figs. 1", 1*, 1'.<br />

Second Tribe—CHyETETINyE.<br />

Corallum massive. Walls not perforated. Nei<strong>the</strong>r septa nor ccenenchyma.<br />

5. Germs Ch^etetes.<br />

Fiselier, Oryct. du Gouv. <strong>de</strong> Moscou, p. 159, 1837.<br />

Corallum glomerate. CoraUites very long, basaltiform, and in general more or less<br />

bent. Calices polygonal. Tabidce in<strong>de</strong>pen<strong>de</strong>nt, not connected in <strong>the</strong> adjoining corallites,<br />

nor placed on <strong>the</strong> same level throughout <strong>the</strong> corallum.<br />

Typ. sp., Cheetetes radians, Fischer, loc. cit., pi. x.xxvi, fig. 6.<br />

6. Genus Dania.<br />

Milne Edw. and J. Haime, Comptes rend., t. xxis, p. 261, 1849.<br />

Corallum having most <strong>of</strong> <strong>the</strong> characters <strong>of</strong> Cha3tetes, but with <strong>the</strong> tabulae connected<br />

through <strong>the</strong> different corallites so as to constitute a series <strong>of</strong> common plates, and to divi<strong>de</strong><br />

<strong>the</strong> whole mass into a great number <strong>of</strong> parallel strata.<br />

Typ. sp., Dania Huronica, Milne Edw. and J. Haime, loc.<br />

cit.<br />

7. Genm Stenopora.<br />

(Pars) Lonsdale, Geol. <strong>of</strong> Russia and Ural Mount., vol. i, p. 631, 1845.<br />

Corallum very similar to Chsetetes, but having small styliform processes at <strong>the</strong> angles<br />

<strong>of</strong> <strong>the</strong> cahces.<br />

Typ. sp., stenopora spinigera, Lonsdale, loc. cit., pi. a, fig. 2.<br />

8. Genus Constellaria.<br />

Dana, Zooph., p. 537, 1846.<br />

Third Tribe—HALYSITIN.E.<br />

Corallum composed <strong>of</strong> corallites constituting vertical lamina? or fasciculi, but more or<br />

less free laterally, and united by means <strong>of</strong> connecting tubes or mural expansions. V^alh<br />

well <strong>de</strong>veloped, and not porous. Septa distinct, but small.

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