. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. 28 [Assembly The species positively determined to tlie present time are from the rocks of the Lower Helderberg group ; to which may be added the Trematospira {Atrypa) camura of the Niagara group, which presents some slight devia- tion in the perforation of the beak, and a species from the Hamilton group which is apparently of the same genus.. Please note that these images are extracted from sca

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. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Science. 28 [Assembly The species positively determined to tlie present time are from the rocks of the Lower Helderberg group ; to which may be added the Trematospira {Atrypa) camura of the Niagara group, which presents some slight devia- tion in the perforation of the beak, and a species from the Hamilton group which is apparently of the same genus.. Please note that these images are extracted from sca

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Image ID: RMBDRX

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