. The Devonian crinoids of the State of New York. Crinoidea, Fossil; Paleontology; Paleontology. DEVONIAN CRINOIDS OF NEW YORK 99 then becomes a synonym of spinigerus. Specimens from Clark county, Indiana, in the collection of Doctor Springer, are figured here (plate 3, figures 3-6). Genus SPHAEROTOCRINUS nov. [Ety. ffipatpWToq, button; x,pivov, lily] This new genus was created to contain Sphaerotocrinus ornatus sp. nov. The genus which it most resembles is the Silurian genus Lyriocrinus. The calyx is more globose, not flattened at the base, with a strongly arched tegmen. One secundibrach is i
. The Devonian crinoids of the State of New York. Crinoidea, Fossil; Paleontology; Paleontology. DEVONIAN CRINOIDS OF NEW YORK 99 then becomes a synonym of spinigerus. Specimens from Clark county, Indiana, in the collection of Doctor Springer, are figured here (plate 3, figures 3-6). Genus SPHAEROTOCRINUS nov. [Ety. ffipatpWToq, button; x,pivov, lily] This new genus was created to contain Sphaerotocrinus ornatus sp. nov. The genus which it most resembles is the Silurian genus Lyriocrinus. The calyx is more globose, not flattened at the base, with a strongly arched tegmen. One secundibrach is incorporated in the calyx. The interbrachial areas are wider at the arms showing the series 1, 2, 3. The anal area is distinct, the primary brachial being followed by a median line of hexagonal anal plates with a row of smaller irregular plates on each side. The arm openings are placed at the upper margin of the dorsal cup. The arms are ten in number, of small diameter and abruptly separated from the calyx. The anus is at the end of a tube and central. For further details see the description of the genotype. Genotype. Sphaerotocrinus ornatus. Distribution. Lower Devonian (Lower Helderberg, Lewistown limestone) of Penn- sylvania. Sphaerotocrinus ornatus sp. nov. Plate 3, figures 7, 8; text figure 35 This species is based upon two speci- mens. The smaller is entirely free from the matrix, and has been used for illustra- tion. The larger specimen is so buried in the matrix and weathered that only the plates of the tegmen can be distinguished. The calyx is subglobose, having in the smaller specimen a height of 9 mm and a width of mm; in the larger specimen, a height of mm and a width of about Figure 35 Analysis of the calyx of Sphae- rotocrinus ornatus, the 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 resembl
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpaleont, bookyear1923
