Archive image from page 176 of Dawn of life being the. Dawn of life: being the history of the oldest known fossil remains, and their relation to geological time and to the development of the animal kingdom dawnoflifebeingh00daws Year: 1875 CONTEMPOEARIES AND SUCCESSORS OP EOZOON. 149 World, but applies to Europe as well, and Europe has furnished a successor to Eozoon in the later Eozoic or Huronian period. In rocks of this age in America, after long search and much slicing of limestones, I have hitherto failed to find any decided organic re- mains other than the Tudor and Madoc specimens of
Archive image from page 176 of Dawn of life being the. Dawn of life: being the history of the oldest known fossil remains, and their relation to geological time and to the development of the animal kingdom dawnoflifebeingh00daws Year: 1875 CONTEMPOEARIES AND SUCCESSORS OP EOZOON. 149 World, but applies to Europe as well, and Europe has furnished a successor to Eozoon in the later Eozoic or Huronian period. In rocks of this age in America, after long search and much slicing of limestones, I have hitherto failed to find any decided organic re- mains other than the Tudor and Madoc specimens of Eozoon. If these are really Huronian and not Lau- rentian, the Eozoon from this horizon does not sensibly Fig. 37. Section of Eozoon Bavaricum, with Serpentine, from the Grystalline Limestone of the Rercynian jprimitive Clay-state Formation at Hohenherg ; 25 diameters, (n.) Sparry carbonate of lime. (&.) Cellular carbonate of lime, (c.) System of tubuli. (d.) Serpentine replacing the coarser ordinary variety, (e.) Serpen- tine and hornblende replacing the finer variety, in the very much contorted portions, difier from that of the Lower Laurentian. The curious limpet-like objects from Newfoundland, discovered by Murray, and described by Billings, under the name Aspidella, are believed to be Huronian, but they have no connection with Eozoon, and therefore need not detain us here. Leaving the Eozoic age, we find ourselves next in the Primordial or Cambrian, and here we discover the sea Canadian Naturalist, 1871.
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