. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. has apparently been pressed smooth. Type P. septemnotatus. alternans, Owen, 1852, Jour. Geo. Soc, vol. 8, pi. 14, Potsdam Gr. latus, Owen,1852, Jour. Geo. Soc, vol. 8, pi. 11, Potsdam Gr. lineatus, Owen, 1852, Jour. Geo. Soc., vol. 8, pi. 13, Potsdam Gr. logananus. Marsh, 1869, Am. Jour. Sci. and Arts, 2d ser., vol. 48, Potsdam Gr. multinotatus, Owen, 1852, Jour. Geo. Soc, vol. 8, pi. 12, Pots- dam Gr. octonotatus
. North American geology and palaeontology for the use of amateurs, students, and scientists [microform]. Paleontology; Paleontology; Geology; Paléontologie; Paléontologie; Géologie. has apparently been pressed smooth. Type P. septemnotatus. alternans, Owen, 1852, Jour. Geo. Soc, vol. 8, pi. 14, Potsdam Gr. latus, Owen,1852, Jour. Geo. Soc, vol. 8, pi. 11, Potsdam Gr. lineatus, Owen, 1852, Jour. Geo. Soc., vol. 8, pi. 13, Potsdam Gr. logananus. Marsh, 1869, Am. Jour. Sci. and Arts, 2d ser., vol. 48, Potsdam Gr. multinotatus, Owen, 1852, Jour. Geo. Soc, vol. 8, pi. 12, Pots- dam Gr. octonotatus, Owen, 1852, Jour. Geo. Soc, vol. 8, pi. 10, Pots- dam Gr. septemnotatus, Owen, 1852, Jour. Geo. Soc, vol. 8, pi. 9. Pots- dam Gr. Fig lor: — Protlch-^*®'''°®*^*''"^' Whit- nites captemnota- field, 1888, ,. tus. vol. 7, p. Ixii. [Ety. protos, first; Bala- nvs, genus.] Shell ovate about the basis; composed of 12 plates of which the carina is largest and most elevated; rostrum small; lateralia five on each side; radial areas between the lateralia broad. Type P. hamiltonensis. hamiltonensis, Whitfield, 1888, Pal. N. Y., vol. 7, p. 209, Ham. Gr. Protocaris, Walcott, 1884, Bui!. U. S. Geo. Sur., vol. 2, p. 283. [Ety. j>rotos, first; karis, shrimp.] Carapace without evi- dence of a dorsal suture, rounded on the dorsal line, and bent downward on the sides; no rostrum; body many jointed, 31 segments extending out from beneath the carapace, the last segment broader than the preceding, and terminating in two spines. Type p. marshi. marshi, Walcott, 1884, Bull. U. S. Geo. Sur. vol. 2, p. 283, Georgia Gr. Protolimulus, Packard, 1886, Mem. Nat. Acad. Sci., p. 150. [Ety. protos, first; Limtdut, a ^enus.] Gephalothorax large, sabsemicircular; genal angles pro- duced ; cephalic appendages small; terminal segments of the posterior mem- bers foliaceous; abdomen composed of six (?) segments, including the large caudal spine. Type P. eriensis. eriensis, Williams, 1885, (Pre
Size: 1277px × 1955px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
