. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. PISCES. 83 No. 309. Holoptychins nobilissinms, Agass. • Body and Head, on slab. The Holoptychians were Ganoid fishes be" longing to the Coilacanthi, or hollow-spined, and are characterized by the large, deeply corrugated scales covering the body, and the sculptured and granulated plates defending the head. The teeth are of two kinds —small serial teeth and large laniaries, the latter placed behind the former. The ventral fins are nearer the tail than in an
. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. PISCES. 83 No. 309. Holoptychins nobilissinms, Agass. • Body and Head, on slab. The Holoptychians were Ganoid fishes be" longing to the Coilacanthi, or hollow-spined, and are characterized by the large, deeply corrugated scales covering the body, and the sculptured and granulated plates defending the head. The teeth are of two kinds —small serial teeth and large laniaries, the latter placed behind the former. The ventral fins are nearer the tail than in any other Ganoid. This splendid speci- men, one of the ornaments of the British Museum, was discovered in the Old Red Sandstone at Clashbinnie, Scotland, and is figured in Murchison's "Silurian Sys- ; The creature lies on its back. " The body (says Hugh Miller) measures a foot across by two feet and a half in length, exclusive of the tail, which is want- ing ; but the armor in which it is cased might have served a Crocodile or Alliga- tor of five times the ; The head is short and obtuse; the lower jaw, the mouth, and the two branchial rays or plates are exposed. The scales are very large and deeply wrinkled. Size, 2 ft. 9 in. x 1 ft. 4 in. Price, $ No. 310. Holoptychius nobilissimus, Agass. Group, on slab. From the same locality as the preceding, and now in the private Geological Museum of Mr. Ward at Rochester. Size, 2 ft. 4 in. x 1 ft. 2 in. Price, $ No. 311. Rhizodus Hibberti, Owen. Lower Jaw, left ramus. The generic term Rldzodus is applied to those Holoptychians of the Coal Measures which have stout serial teeth and slender laniaries. The great strength of the cephalic plates and of the jaws and teeth shows that this was a powerful carnivorous Fish. This fragment of the lower jaw was disinterred from the Carboniferous Limestone, near Edinburgh, and is in the British Museum. Size, 19 x 7. Price, $ No. 312. Undina striolaris, Mi
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectfossils, bookyear1866
