. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 146 (Fig. 27) represents a calyx obtained from the Deniissa bed. which is with some hesitation referred to this species. The median ridge, on the center of the plates is strong, bnt ill defined, and the spine of the bifnrcating second costal is represented bv a bhmt tnbercle. A small anal intei-radial appears on the exposed side of the specimen, and above this primary interradial, appears a secondary one, much smaller. In the original description of T. nuntius Hall states . . . ••interradial and anal plates, appar
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 146 (Fig. 27) represents a calyx obtained from the Deniissa bed. which is with some hesitation referred to this species. The median ridge, on the center of the plates is strong, bnt ill defined, and the spine of the bifnrcating second costal is represented bv a bhmt tnbercle. A small anal intei-radial appears on the exposed side of the specimen, and above this primary interradial, appears a secondary one, much smaller. In the original description of T. nuntius Hall states . . . ••interradial and anal plates, apparently ;' From the description we may gather that the type specimen was an imperfect one, and it may have been that the azygons side, if present, was not exposed. The specimen figured is somewhat crushed and distorted. What appears to be arms of this, or a closely-related species, were obtained on a slab of shale at Section 7, from between nine and twelve feet below the Encrinal limestone. They are figured herewith. Genus ANCYROCRINUS. H.\ll. [Ety. : Ankara, grapuel ; kriiioii, lily.] (15th Rep't N. Y. State Mas. Nat. Hist., p. 89.) This genus was founded on what ajipears to be the base of a stem enlarged into a bulb, from which four ascending- processes diverge, giving the whole a resemblance to an anchor. Frcmi the center the main stem ascends. Fig. 28. Ancijro- crinus bill bo s u s. (a) Normal speci- men with spines restored; ib-g) vari- ously deformed iu- d i V i d u a 1 s : (b, c) specimen with tlat base and four irreg- ular prongs : (d) specimen with nu- merous prongs di- verging at different levels : ( e, /) speci- men with prolonged base and three jjrongs: (g) speci- men with brolsen base, prongs di- verging nearly at right angles. Stu- dent Palaeontolog- ical Collection. Har- vard University, Cat. ^37. (Original.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and app
Size: 1847px × 1353px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, books, booksubjectnaturalhistory
