. Bulletin - United States National Museum. Science. DENDROID GRAPTOLITES OF HAMILTON, ONTARIO. 19 Doctor Ruedemann has published the following on the species: It is by no means so common in our Niagara beds as one should suspect from •its long bibliographic list or conclude from the direct statement of some authors that it is abundant in the New Yorls rocks; in fact, it is one of the least common of the graptolites of our Rochester shale and all the references are excerpts of Hall's original description. I have seen altogether not more than half a dozen specimens, including Hall's types, and
. Bulletin - United States National Museum. Science. DENDROID GRAPTOLITES OF HAMILTON, ONTARIO. 19 Doctor Ruedemann has published the following on the species: It is by no means so common in our Niagara beds as one should suspect from •its long bibliographic list or conclude from the direct statement of some authors that it is abundant in the New Yorls rocks; in fact, it is one of the least common of the graptolites of our Rochester shale and all the references are excerpts of Hall's original description. I have seen altogether not more than half a dozen specimens, including Hall's types, and have not been able to find one which would reveal the form of the thecie. Remarks.—D. retiforme is a remarkably stately graptolite, possessing wide- open, funnel-shaped rhabdosomes, fragmentary specimens of which with a diameter of no less than half a meter have been observed; and the size of the branches and the meshwork are coarse in proportion. Pocta has compared it to the Bohemian D. grande Barr[aude], also a Siluric form, and pointed out the differences between the two. Hoiison and locality.—The two specimens here figured are from the more shaly strata (beds 9-11 of section) beneath the cherty dolo-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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