. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fig. 288.âDola- tocrtnas lacus. Diagram of a ray. Donacicrinilea, Troost. Not defined. simplex, Troost. Not defined. DoRYCKiNUs, Roemer, 1854, Archiv. f. Naiur- gesch Jahrg. 19, p. 207. [Ety. dury, spear; krinon, lily.] Body turbinate or subglobose, truncate at the base, <!»â pressed in the interradial spaces 8 as to make it pentaIobi;te; dome convex and usually bearing from 1 to 6 spinos; basals 3 ; primar
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. Fig. 288.âDola- tocrtnas lacus. Diagram of a ray. Donacicrinilea, Troost. Not defined. simplex, Troost. Not defined. DoRYCKiNUs, Roemer, 1854, Archiv. f. Naiur- gesch Jahrg. 19, p. 207. [Ety. dury, spear; krinon, lily.] Body turbinate or subglobose, truncate at the base, <!»â pressed in the interradial spaces 8 as to make it pentaIobi;te; dome convex and usually bearing from 1 to 6 spinos; basals 3 ; primary radials 3x5; second- ary radials 2x2; or where there are tertiary radials, there are only 1 x 2 secondaries; arms24to40; interradials 2 or 3, in two series; azygous area very different from the interradial areas, and having several more plates and an aperture near the top directed laterally; readily distiaguished from Batocrinus and Eretmocrinus by the lobed form of the body", by the azygous area and lateral opening, and by the shortness of the arms. Type D. ensis. canaliculatus. Meek & Worthen, 1,S69, Proc. Acad. Nat. Sci., p. 166, and (ieo. Sur. 111., vol. 5, p. 381, Burlington Gr. concavus. Meek & Worthen, 1861, Or (Actinocrinus con- y-^Y)r ^O cavus,) Proc. Acad. ^ N/,i>^,r^' Nat " ' "' " 131 111. Low. Burlington Gr 'US,) Proc. Acad. â ^^^/<::iC)i'^,-' t. Sci. Phil., ^'^" , and (ieo. Sur. ^ nx^f^r'^' , vol. 2, p. 215, V0'i^A^ corniopriis Hall IS.'iR ^"^'*- 2«)orycriiuis cornigeru8,riaii,iooi5, concavus. Dlacram (Actinocrinus cor- nigerus,) Geo. Rep. Iowa, p. 576, Bur- lington Gr. gouldi, Hall, 1858, (Actinocrinus gouldi,) Geo. Rep. Iowa, p. 613, Keokuk ( 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 Miller, S. A. (
Size: 853px × 2931px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
