Identifier: annualreporto441891newy (find matches)
Title: Annual report of the Regents
Year: 1889 (1880s)
Authors: New York State Museum University of the State of New York. Board of Regents
Subjects: New York State Museum Science
Publisher: Albany : J.B. Lyon, State Printer
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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in that accompanying this paper. In the hope of findingDr. Greens original specimens, search has been made in the collec-tions of the Wagner Free Institute of Science, at Philadelphia, by thefavor of its secretary, Mr. Charles W. Johnson, but the specimens, ifextant, are for the time being lost sight of. Report of tee State Geologist. 109 Dr. Green evidently made an erroneous citation of tbe locality ofthese fossils. The Corniferous limestone does not occur near Xenia,and is not known in Green county, Ohio; but an error of this kind isnot altogether surprising. No ones knowledge of the geology of Ohiohad then attained this degree of discrimination; of the origin of thespecimens the author had no personal knowledge; they had come tohim through the hands of a collector, upon the accuracy of whoseinformation it is not necessary, in a critical question, to put fullreliance. EXPLANATION OF PLATE IV. CoRONURA DiuRus, Green (sp.)Outline drawing of the only entire individual known. Plate IV.
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CORONURA DIURUS, GrEEN. OBSERVATIONS ON THE TERATASPIS GRANDIS, Hall,The Laro:est Known Trilobite. By J. M. Clarke. Communicated to the State Geologist December, 1890. Trilobites of great size have been reported from various forma-tions. With rare exceptions, however, these relics are but fragmentsof the test, leaving to the imagination the restoration of the originalproportions of the animal, and without an earnest mental effort oneis apt to leave the contemplation of the large fragment with no ade-quate conception of the imposing lineaments of its owner. Indica-tions of these gigantic forms occur in all the grand faunas of thePalaeozoic, with the exception of the Carboniferous where diminutionin numbers was accompanied by diminution in size, or, in other words,by the prevalence of genera in which great size was never attained. Almost with the earliest known appearance of the Trilobites thegenus Paradoxides attained magnificent proportions. ParadoxidesHarlaniy the well-known species

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