. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. No. 807. Faujasia apicalis, D'Orb. (Syn. Pygurus apicalis, Desor.) This species is conical, with the ambulacral summit a little eccentric, and the mouth subcentral. From the Upper Chalk of Maestricht, Holland. Price, $ No. 808. Pygorhynchus G-rignonensis, Agass. In this species,"the posterior side is truncated, the under side concave, and the mouth a little more eccentric than the summit. Itis the Nueleolites Grignonensis of Defrance. It characterizes
. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. No. 807. Faujasia apicalis, D'Orb. (Syn. Pygurus apicalis, Desor.) This species is conical, with the ambulacral summit a little eccentric, and the mouth subcentral. From the Upper Chalk of Maestricht, Holland. Price, $ No. 808. Pygorhynchus G-rignonensis, Agass. In this species,"the posterior side is truncated, the under side concave, and the mouth a little more eccentric than the summit. Itis the Nueleolites Grignonensis of Defrance. It characterizes the Cal. caire Grossier (Middle Eocene Tertiary) in the envi- rons of Paris. Price, $ No. 809. Pygurus Blumenbachii, Agass. This genus, of the group Nueleolites, is akin to Echinolampas. It has a very prominent anal beak, eccentric mouth and summit, and lanceolate petals. From the Coral Rag (Middle Oolite), Tonnerre, France. Original in the private Geological Cabinet of Mr. Ward^ Rochester. Price, $ No. 810. Pygurus Davoustianus, Cott. From the Great Oolite, Sarthe, France. Price, $ No. 811. Pygurus lampas, Beche. (Syn. Pygurus trilobus, Agass.) From the Upper Greensand (Cretaceous), Lemans, France. Price, $ Clypeastridse,. No. 812. Clypeaster altus, Lam. Two specimens. This genus, one of the true Clypeastridae, includes the lar- gest of sea-urchins. The shell is ob- long ; mouth angular and furnished with well developed teeth ; tubercles, mere granules, and the spines propor- tionally small. The shell of this species is subpentagonal, and the ambulacral portion is much elevated. These specimens—from the Eocene Tertiary of the Isle of Malta—are now in the Ward Museum of the University of Rochester. Size of each, 6x5. Price, $ No. 813. Clypeaster grandiflorus, Bronn. A smaller and flatter form from the Miocene Tertiary, Montpelier, France, and in the same Museum as the preceding. Price, $ No. 814 Clypeaster umbrella, Agass. This inflated form,
Size: 2161px × 1156px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectfossils, bookyear1866
