. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. ECHINODERMATA. 1G7 No. 844. Holaster subglobosus, Agass. This species is very nearly as convex on the under side as above. This speci- men is above the ordinary size and has the apex unusually elevated. From the Upper Greensand (Cretaceous), Rouen, France, and now in the Ward Museum, University of Rochester. Price, $ No. 845. Linthia crucia, Desor. (Syn. Brissus cruciatus, Agass.) This large cordiform Echinus, allied to Periaster, has long, deep petals, th
. Catalogue of casts of fossils, from the principal museums of Europe and America, with short descriptions and illustrations. Fossils. ECHINODERMATA. 1G7 No. 844. Holaster subglobosus, Agass. This species is very nearly as convex on the under side as above. This speci- men is above the ordinary size and has the apex unusually elevated. From the Upper Greensand (Cretaceous), Rouen, France, and now in the Ward Museum, University of Rochester. Price, $ No. 845. Linthia crucia, Desor. (Syn. Brissus cruciatus, Agass.) This large cordiform Echinus, allied to Periaster, has long, deep petals, the ambulacral summit slightly eccentric, and a wide anterior furrow From the Miocene Tertiary, Capri, Italy. Size, 7x6. Price, $ No, 846. Macropneustes bissoides, Leske. This Spatangoid is nearly cylindrical, truncated behind, with large tubercles irregularly distributed, and long petals. From the Nummulitic limestone (Mid- dle Eocene Tertiary), Montfort, France, Price, $ No. 847. Micraster cor-anguinum, Agass. This genus of Spatangidm is so termed from the star-like arrangement of its four small ambulacra. The test is heart-shaped, and wider before than behind, with a furrow in front; the tubercles are small, and irregularly distributed ; the mouth is transverse, situated anteriorly, and protected by a projection of the odd inter-ambulacrum. From the , England, and now in the Ward Museum, University of Rochester. Price, $ No. 848. Micraster (Epiaster) acutus, Agass. This Echinus is of triangular form, and has very concave petals. From the Upper Greensand (Cretaceous), France. Price, $ No. 849. Pericosmus Edwardsii, Agass. A Spatangoid from the Miocene Tertiary of Superga, Italy. Price, $ No. 850. Schizaster ambulacrum, Agass. This Spatangoid is well characterized by very deep and unequal petals, and eccentric summit. From the Nummulitic limestone (Middle Eocene Tertiary), Biarritz, France. Price, $ Price, $ Price, $ No. 851. Sc
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectfossils, bookyear1866
