The Canadian journal of industry, science and art . Fig. In the annexed section, 1 indi-cates the higher portion of theMedina beds; 2, the grey band,which forms the upper limit ofthis series ; 3, the Clinton strata ;and 4, 5, and 6, the succeedingcalcareous beds of the Niagaraformation. In the Medina de-posits, fossils are exceedingly appear with us to be limitedto fucoids, and to a single speciesof lingula of a triangular or cuniform outline {L. cuneata.) The mostcharacteristic fucoid is the Arthrophycus Harlani, (fig. 211), a form?which occurs also, and more abundantly, in th
The Canadian journal of industry, science and art . Fig. In the annexed section, 1 indi-cates the higher portion of theMedina beds; 2, the grey band,which forms the upper limit ofthis series ; 3, the Clinton strata ;and 4, 5, and 6, the succeedingcalcareous beds of the Niagaraformation. In the Medina de-posits, fossils are exceedingly appear with us to be limitedto fucoids, and to a single speciesof lingula of a triangular or cuniform outline {L. cuneata.) The mostcharacteristic fucoid is the Arthrophycus Harlani, (fig. 211), a form?which occurs also, and more abundantly, in the Clinton beds. These latter contain, in addition, va- rious corals, brachiopods, trilo-bites, &c.; many of which,however, belong likewise eitherto the succeeding Niagara for-mation, or to some of theFig. m.—Arthrophycus Harlani (Hall.) Hudson River or Trenton beds of the Lower Silurian series. Some of the most abundant comprise: Stenopora fibrosa, (fig. 117,) Heliopora fragilis, (fig. 212,) Favosites Gothlandica, (fig. 214,) Strophomena rhomb old al
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Keywords: ., bookcentury1800, bookdecade1850, bookpublishertoron, bookyear1856
