. Annual report. 1st-12th, 1867-1878. Geology. Carapace in one piece, without evidence of dorsal suture. Periphery subpentagonal, lateral edges parallel, making sharp angles with the two anterior edges, which are re-entrantly curved, and meet in the axis of the carapace. As in Spathiocaris, there is a cleft beginning centrally Jtvwlm^fnoearissul>levis' at the highest point of the carapace. L. lutheri Clarke, 1. c. 478,1882. Aptychopsis Barrande, 1872. Differs from Peltocaris in the rostrum being triangular instead of parabolical; and from Discinocaris in having no suture indicating the sepa
. Annual report. 1st-12th, 1867-1878. Geology. Carapace in one piece, without evidence of dorsal suture. Periphery subpentagonal, lateral edges parallel, making sharp angles with the two anterior edges, which are re-entrantly curved, and meet in the axis of the carapace. As in Spathiocaris, there is a cleft beginning centrally Jtvwlm^fnoearissul>levis' at the highest point of the carapace. L. lutheri Clarke, 1. c. 478,1882. Aptychopsis Barrande, 1872. Differs from Peltocaris in the rostrum being triangular instead of parabolical; and from Discinocaris in having no suture indicating the separation of the two principal valves. A. primus Barr. 1. c. 457, PI. 33, 1872. Bohe- Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Geological and Geographical Survey of the Territories (U. S. ); United States. General Land Office; United States. Dept. of the Interior. Washington, Govt. Print. Off.
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishe, booksubjectgeology
