A pictorial atlas of fossil remains, consisting of coloured illustrations selected from Parkinson's "Organic remains of a former world," and Artis's "Antediluvian phytology." . i>. f u///t^ J^cr : Y/;M//-y^. 1l rOSSIL FLORA. 75 PLATE XXIX. Trifoliate Sphenopterite. {Sphenopteris trifoliata, Brongniart, Hist. Veg. Foas. tab. 53, fig. trifoUatus, of Artis. Cheilanthites; from its supposed analogy to the recent genus Cheilanthes. Academy of Bonn.) This is a rare species of fern from the coal shale of Yorkshire, Elsecar Colliery. It hasthe leaf or frond tripinnate; th
A pictorial atlas of fossil remains, consisting of coloured illustrations selected from Parkinson's "Organic remains of a former world," and Artis's "Antediluvian phytology." . i>. f u///t^ J^cr : Y/;M//-y^. 1l rOSSIL FLORA. 75 PLATE XXIX. Trifoliate Sphenopterite. {Sphenopteris trifoliata, Brongniart, Hist. Veg. Foas. tab. 53, fig. trifoUatus, of Artis. Cheilanthites; from its supposed analogy to the recent genus Cheilanthes. Academy of Bonn.) This is a rare species of fern from the coal shale of Yorkshire, Elsecar Colliery. It hasthe leaf or frond tripinnate; the pinnae, lobes, or wings, alternate with an odd one; the leafletsare ternate, with roundish, convex lobes. This plant has been referred to the tropical ferns, and is nearly allied to the genera Davallia,or Cheilanthes; but from the almost general absence of the organs of fructification in fossil ferns,it is impossible to refer them with any certainty to living genera. It belongs to theSphenopteres, or wedge-shaped-leaf ferns, of M. Brongniart. A, shows the cast or matrix of the under side of the leaf; b, the upper side in relief. I 1. V. rOSSIL FLORA. 11 PLATE XXX. Milton Fiucite. {Pecopteris Miltoni, Brongniart, Hist. Veg. Foss. tab. 114,Filicites Miltoni, Artis.) This exquisite specimen exhibits part of two leaves attached to the stem, the under surfaceof the fronds, on which the fructification is beautifully displayed, being exposed. The frond istripinnate, the stipes large and strong, the leaflets linear with the tip rounded. Thefructification is arranged in lines near the margin; but slight traces of the venation of theleaflets are distinguishable. From Milton, in Yorkshire. r
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectpaleontology, bookyea
