Transcriber’s Note:
New original cover art included with this eBook is granted to the public domain.
| Vol. I, No. 6. | SEPTEMBER, 1902. | { Whole Series, |
| { Vol. XI, No. 6. |
The following will be of interest and value in completing thefaunal succession of the uppermost part of the Carboniferous, as wellas for the biologic interest of one of them.
The distinctive features of this species are: Surface ornamentedwith both pustules and granules, large interradial supporting plateabove calyx, ten short, massive arms.
Description: Calyx basin-shaped, shallow, quite concave below.Infrabasals partly covered, but located entirely within the body cavity.Stem small and apparently round. The five basals are large, recurvedbelow the middle, concave in the center of the more depressed part,four apparently hexagonal and one heptagonal, and larger than theothers supporting the interradial; all higher than wide, sutures notmuch depressed. There are five large, massive radials a trifle morethan twice as wide as high, well beveled, faceted, and apparently sagginga little on the upper articular surface. Interradial large, fullyhalf within the calyx, higher than broad, and the upper portion verystrongly curved inward. This plate supports another entirely withoutthe calyx, which is comparatively large and appears to be pentagonalwhen seen from without, the two upper sides being much longer thanthe rest, making the plate appear triangular at first sight, fittingclosely between the arms on either side. The five brachial plates arelarge, contiguous save on the posterior side, and produced into anobtuse spinous process.