. Annual report. New York State Museum; Science; Science. 220 NEW YORK STATE MUSEUM Dendrograptus gracillimus Ulrich. Cat. Foss. Cincinnati Group 0., Ind. and Ky. 1880 Dendrograptus gracillimum James. Cin. Soc. Nat. Hist. Jour. 1885. ; P1- 9. fig- 5 Dendrograptus gracillimus James. Cin. Soc. Nat. Hist. Jour. 1892. Dendrograptus gracillimus Harper & Bassler. Cat. Foss. Trenton and Cincinnati Periods in Vicinity of Cincinnati, O. 1896 Dendrograptus gracillimus Gurley. Jour. Geol. 1896. 4:95 Dendrograptus gracillimus Nickles. Cin. Soc. Nat. Hist. Jour. 1902. 20:68 Lesquereux consid
. Annual report. New York State Museum; Science; Science. 220 NEW YORK STATE MUSEUM Dendrograptus gracillimus Ulrich. Cat. Foss. Cincinnati Group 0., Ind. and Ky. 1880 Dendrograptus gracillimum James. Cin. Soc. Nat. Hist. Jour. 1885. ; P1- 9. fig- 5 Dendrograptus gracillimus James. Cin. Soc. Nat. Hist. Jour. 1892. Dendrograptus gracillimus Harper & Bassler. Cat. Foss. Trenton and Cincinnati Periods in Vicinity of Cincinnati, O. 1896 Dendrograptus gracillimus Gurley. Jour. Geol. 1896. 4:95 Dendrograptus gracillimus Nickles. Cin. Soc. Nat. Hist. Jour. 1902. 20:68 Lesquereux considered this form as a Siluric land plant and described it as follows : Stem very slender, dichotomously branching, smooth or naked half round, slightly channeled in the length ; branches numerous, of various length, filiform. The stem is scarcely 1 mm thick at the base; the upper branches curved as from a spiral unfolding, are slender, gradually attenuated and capilliform, or of the thickness of thin thread at their extremities. Near Covington, opposite Cincinnati in the bed of the Licking- river. Found by Mr Ed. Ulrich, communicated by Rev. H. Herzer. Dr Ulrich informs me that the type here referred to, has been loaned by him to Rev. Herzer and probably sold with the collection of the latter to Prof. J. Hall. In that case it is now in the possession of Chicago University which has lately acquired the remainder of Hall's collections and is at present not accessible. Dr Ulrich has, however, been kind enough to send me two specimens which he states are from the same locality and undoubtedly conspecific with Lesquereux's type (topotypes). These have furnished us the following data: A stem which has a diameter of .8+ mm is so little compressed that it. nt Fig. 116-18 Mastigograptus gracillimus (Lesquereux). Fig. 116 Copy of original figure. Fig. 117, 118 Enlargements (x 5) of portions of branches. Please note that these images are extracted from scanned page images that may have been
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